81121138 (number)

81121138 is an even 8-digits composite number following 81121137 and preceding 81121139. In scientific notation, it is written as 8.1121138 × 10^7. The sum of its digits is 25. It has a total of 4 prime factors and 16 positive divisors. There are 33055440 positive integers (up to 81121138) that are relatively prime to 81121138.

Interesting facts

Basic properties

Name

Name eighty-one million one hundred twenty-one thousand one hundred thirty-eight

Notation

Scientific notation 8.1121138 × 10^7
Engineering notation 8.1121138 × 10^6

Prime Factorization of 81121138

Prime Factorization 2 × 161 × 191 × 1319

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81121138
Product of the distinct prime numbers

The prime factorization of 81121138 is 2 × 161 × 191 × 1319. Since it has a total of 4 prime factors.

Most popular turbo-numbers

5, 8, 84, 64, 366, 250, 9131, 8522, 47856, 66505, 789307, 765655, 6329998, 8412530, 84934962, 90292454, 170209144, 39061796, 4968279086, 7272456223

Basic calculations (n = 81121138)

Multiplication

n×y
n×2 162242276
n×3 243363414
n×4 324484552
n×5 405605690

Division

n÷y
n÷2 40560569
n÷3 27040379.333333
n÷3 20280284.5
n÷5 16224227.6

Exponentiation

ny
n2 6580639030415044
n3 5.3382892691448E+23
n4 4.3304810048622E+31
n5 3.512935472018E+39

Nth Root

y√n
2√n 9006.7273745795
3√n 432.89045653098
4√n 94.90377955898
5√n 38.179198494301

Divisors of 81121138

1, 2, 161, 191, 322, 382, 1319, 2638, 30751, 61502, 212359, 251929, 424718, 503858, 40560569, 81121138

16 divisors

τ Total Divisors 16
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81121137
Sum of the proper positive divisors of n
A Arithmetic Mean 0.0625
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 16
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81121138 can be divided by 16 positive divisors. The sum of these divisors (counting 81121138) is 1, the average is 0.0625.

Base conversion 81121138

Base System Value
2 Binary 100110101011100111101110010
3 Ternary 12122122101021121
4 Quaternary 10311130331302
5 Quinary 131231334023
6 Senary 12014412454
8 Octal 465347562
10 Decimal 81121138
12 Duodecimal 2320112a
16 Hexadecimal 4d5cf72
20 Vigesimal 15702gi
36 Base36 1capgy

Cryptographic Hash Functions

md5 714024abc87e0f686929accde5a75abe
sha1 52a25ddf5cc1e0fbf0c9b8dccda3fce285bbe544
sha256 d8328cd0029ecb74bc6629f446684e8f807a0fb381b4b6aaac5fc71467c68eb5
sha512 2e9bdd829ef11e024e80c12cbb26934529a9c5df6382e3b042a6aa306598372439a27d71fd6186ebd2e0d7898ccdc14380a8627d31db3057e0efc1c8ff0f18ba
ripemd-160 050a228f8803f743d6e8504b45c991309a774dc4

81121138 as geometric shapes

Circle

Radius = n
Diameter 162242276
Circumference 509699142.38329
Area 2.0673687233878E+16

Sphere

Radius = n
Volume 2.236097380091E+24
Surface area 8.2694748935513E+16
Circumference 509699142.38329

Square

Length = n
Perimeter 324484552
Area 6580639030415044
Diagonal 114722613.55474

Cube

Length = n
Surface area 39483834182490264
Volume 5.3382892691448E+23
Space diagonal 140505932.58381

Equilateral Triangle

Length = n
Perimeter 243363414
Area 2.8495002867374E+15
Altitude 70252966.291903

Triangular Pyramid

Length = n
Surface area 2.8495002867374E+15
Volume 6.2912342369128E+22
Height 38240871.184913