28681938 (number)

28681938 is an even 8-digits composite number following 28681937 and preceding 28681939. In scientific notation, it is written as 2.8681938 × 10^7. The sum of its digits is 45. It has a total of 5 prime factors and 24 positive divisors. There are 9354744 positive integers (up to 28681938) that are relatively prime to 28681938.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.8681938 × 10^7
Engineering notation 2.8681938 × 10^6

Prime Factorization of 28681938

Prime Factorization 2 × 9 × 9 × 47 × 3767

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 3186882
Product of the distinct prime numbers

The prime factorization of 28681938 is 2 × 9 × 9 × 47 × 3767. Since it has a total of 5 prime factors.

Most popular turbo-numbers

7, 6, 33, 32, 329, 806, 6840, 5979, 76731, 38971, 277803, 22646, 1290802, 8033831, 35691628, 96941898, 890799245, 335409137, 4600528359, 170955874

Basic calculations (n = 28681938)

Multiplication

n×y
n×2 57363876
n×3 86045814
n×4 114727752
n×5 143409690

Division

n÷y
n÷2 14340969
n÷3 9560646
n÷3 7170484.5
n÷5 5736387.6

Exponentiation

ny
n2 822653567435844
n3 2.3595298616674E+22
n4 6.7675889201492E+29
n5 1.9410756581721E+37

Nth Root

y√n
2√n 5355.5520723825
3√n 306.1043473427
4√n 73.181637535535
5√n 31.011423261869

Divisors of 28681938

1, 2, 9, 18, 47, 81, 94, 162, 423, 846, 3767, 3807, 7534, 7614, 33903, 67806, 177049, 305127, 354098, 610254, 1593441, 3186882, 14340969, 28681938

24 divisors

τ Total Divisors 24
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -28681937
Sum of the proper positive divisors of n
A Arithmetic Mean 0.041666666666667
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 24
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 28681938 can be divided by 24 positive divisors. The sum of these divisors (counting 28681938) is 1, the average is 0.041666666666667.

Base conversion 28681938

Base System Value
2 Binary 1101101011010011011010010
3 Ternary 1222222012020000
4 Quaternary 1231122123102
5 Quinary 24320310223
6 Senary 2502430430
8 Octal 155323322
10 Decimal 28681938
12 Duodecimal 9732416
16 Hexadecimal 1b5a6d2
20 Vigesimal 8j54gi
36 Base36 h2r4i

Cryptographic Hash Functions

md5 48562ae740bc6da2776f891d0c219dd6
sha1 3509503f27a9ec35d8234bbc2985facecfc25652
sha256 679327fd168ec9c1ac2815f52df8960009e8c2b66dff25779f8f7270df7d821a
sha512 6162296a63cb3ed6169b902d715aa2f7638d4e3ab27da41b8190d9138fb08cb25ed679f47f2a22ca89f34e096d532d93cb5f2bf9a40dcf6bb0e5f6b7e6f811d0
ripemd-160 c8896b20c9a20a0c28d97af6e63d97e684270fad

28681938 as geometric shapes

Circle

Radius = n
Diameter 57363876
Circumference 180213931.42304
Area 2.5844424039059E+15

Sphere

Radius = n
Volume 9.8835755724533E+22
Surface area 1.0337769615624E+16
Circumference 180213931.42304

Square

Length = n
Perimeter 114727752
Area 822653567435844
Diagonal 40562385.714744

Cube

Length = n
Surface area 4935921404615064
Volume 2.3595298616674E+22
Space diagonal 49678573.87554

Equilateral Triangle

Length = n
Perimeter 86045814
Area 3.5621944395667E+14
Altitude 24839286.93777

Triangular Pyramid

Length = n
Surface area 3.5621944395667E+14
Volume 2.7807326093286E+21
Height 13520795.238248