81139968 (number)

81139968 is an even 8-digits composite number following 81139967 and preceding 81139969. In scientific notation, it is written as 8.1139968 × 10^7. The sum of its digits is 45. It has a total of 13 prime factors and 288 positive divisors. There are 20901888 positive integers (up to 81139968) that are relatively prime to 81139968.

Interesting facts

Basic properties

Name

Name eighty-one million one hundred thirty-nine thousand nine hundred sixty-eight

Notation

Scientific notation 8.1139968 × 10^7
Engineering notation 8.1139968 × 10^6

Prime Factorization of 81139968

Prime Factorization 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 7 × 3 × 13 × 27 × 43

Composite number
ω Distinct Factors 6
Total number of distinct prime factors
Ω Total Factors 13
Total number of prime factors
rad Radical 633906
Product of the distinct prime numbers

The prime factorization of 81139968 is 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 7 × 3 × 13 × 27 × 43. Since it has a total of 13 prime factors.

Most popular turbo-numbers

7, 1, 56, 98, 802, 626, 9502, 9758, 8930, 88935, 195773, 291292, 1394486, 4630044, 42716052, 79780650, 892428339, 662245564, 2558142711, 9039102848

Basic calculations (n = 81139968)

Multiplication

n×y
n×2 162279936
n×3 243419904
n×4 324559872
n×5 405699840

Division

n÷y
n÷2 40569984
n÷3 27046656
n÷3 20284992
n÷5 16227993.6

Exponentiation

ny
n2 6583694407041024
n3 5.3420075350909E+23
n4 4.3345032045303E+31
n5 3.5170145131149E+39

Nth Root

y√n
2√n 9007.7726436672
3√n 432.92394840448
4√n 94.909286393204
5√n 38.180970776062

Divisors of 81139968

1, 2, 3, 4, 6, 7, 8, 12, 13, 14, 16, 21, 24, 26, 27, 28, 32, 39, 42, 43, 48, 52, 54, 56, 64, 78, 81, 84, 86, 91, 96, 104, 108, 112, 128, 129, 156, 162, 168, 172, 182, 189, 192, 208, 216, 224, 256, 258, 273, 301, 312, 324, 336, 344, 351, 364, 378, 384, 416, 432, 448, 516, 546, 559, 567, 602, 624, 648, 672, 688, 702, 728, 756, 768, 832, 864, 896, 903, 1032, 1053, 1092, 1118, 1134, 1161, 1204, 1248, 1296, 1344, 1376, 1404, 1456, 1512, 1664, 1677, 1728, 1792, 1806, 2064, 2106, 2184, 2236, 2268, 2322, 2408, 2457, 2496, 2592, 2688, 2752, 2808, 2912, 3024, 3328, 3354, 3456, 3483, 3612, 3913, 4128, 4212, 4368, 4472, 4536, 4644, 4816, 4914, 4992, 5184, 5376, 5504, 5616, 5824, 6048, 6708, 6912, 6966, 7224, 7371, 7826, 8127, 8256, 8424, 8736, 8944, 9072, 9288, 9632, 9828, 9984, 10368, 11008, 11232, 11648, 11739, 12096, 13416, 13932, 14448, 14742, 15093, 15652, 16254, 16512, 16848, 17472, 17888, 18144, 18576, 19264, 19656, 20736, 22464, 23296, 23478, 24192, 24381, 26832, 27864, 28896, 29484, 30186, 31304, 32508, 33024, 33696, 34944, 35776, 36288, 37152, 38528, 39312, 44928, 45279, 46956, 48384, 48762, 53664, 55728, 57792, 58968, 60372, 62608, 65016, 67392, 69888, 71552, 72576, 74304, 77056, 78624, 89856, 90558, 93912, 97524, 105651, 107328, 111456, 115584, 117936, 120744, 125216, 130032, 134784, 143104, 145152, 148608, 157248, 181116, 187824, 195048, 211302, 214656, 222912, 231168, 235872, 241488, 250432, 260064, 269568, 297216, 314496, 316953, 362232, 375648, 390096, 422604, 429312, 445824, 471744, 482976, 500864, 520128, 628992, 633906, 724464, 751296, 780192, 845208, 891648, 943488, 965952, 1001728, 1040256, 1267812, 1448928, 1502592, 1560384, 1690416, 1886976, 1931904, 2080512, 2535624, 2897856, 3005184, 3120768, 3380832, 3863808, 5071248, 5795712, 6241536, 6761664, 10142496, 11591424, 13523328, 20284992, 27046656, 40569984, 81139968

288 divisors

τ Total Divisors 288
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81139967
Sum of the proper positive divisors of n
A Arithmetic Mean 0.0034722222222222
Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G Geometric Mean 1
Returns the nth root of the product of n divisors
H Harmonic Mean 288
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81139968 can be divided by 288 positive divisors. The sum of these divisors (counting 81139968) is 1, the average is 0.0034722222222222.

Base conversion 81139968

Base System Value
2 Binary 100110101100001100100000000
3 Ternary 12122200100010000
4 Quaternary 10311201210000
5 Quinary 131232434333
6 Senary 12015040000
8 Octal 465414400
10 Decimal 81139968
12 Duodecimal 23210000
16 Hexadecimal 4d61900
20 Vigesimal 15729i8
36 Base36 1cb400

Cryptographic Hash Functions

md5 3089508e2a16934774f51d868226c7bd
sha1 a470ef71ffac3ec69e4c669ce439d70aa6061310
sha256 59edebc8e2e9c177de62597903c037bfc06ddebbf508e234f8cfa0e93e950418
sha512 f8247e4715413eb1885de6108702f9282c6eb64f99164dd7f3821edac4896f196b3b8378c4db084abb65702be8b99dcc6d651771721943a8220d0ec775df968e
ripemd-160 0a3a3db7da2f274d6f311f488bef33fe28afa48e

81139968 as geometric shapes

Circle

Radius = n
Diameter 162279936
Circumference 509817454.76262
Area 2.068328598264E+16

Sphere

Radius = n
Volume 2.2376548836884E+24
Surface area 8.2733143930561E+16
Circumference 509817454.76262

Square

Length = n
Perimeter 324559872
Area 6583694407041024
Diagonal 114749243.19612

Cube

Length = n
Surface area 39502166442246144
Volume 5.3420075350909E+23
Space diagonal 140538547.10051

Equilateral Triangle

Length = n
Perimeter 243419904
Area 2.8508233036255E+15
Altitude 70269273.550256

Triangular Pyramid

Length = n
Surface area 2.8508233036255E+15
Volume 6.295616255354E+22
Height 38249747.73204