640888921 (number)

640888921 is an odd 9-digits composite number following 640888920 and preceding 640888922. In scientific notation, it is written as 6.40888921 × 10^8. The sum of its digits is 46. It has a total of 2 prime factors and 4 positive divisors. There are 640181412 positive integers (up to 640888921) that are relatively prime to 640888921.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 6.40888921 × 10^8
Engineering notation 6.40888921 × 10^6

Prime Factorization of 640888921

Prime Factorization 907 × 706603

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 640888921
Product of the distinct prime numbers

The prime factorization of 640888921 is 907 × 706603. Since it has a total of 2 prime factors.

Most popular turbo-numbers

1, 2, 95, 71, 455, 386, 1222, 7032, 411, 97990, 259449, 349690, 8259011, 9739785, 34763390, 71035568, 584866148, 217512117, 9164806101, 6737272178

Basic calculations (n = 640888921)

Multiplication

n×y
n×2 1281777842
n×3 1922666763
n×4 2563555684
n×5 3204444605

Division

n÷y
n÷2 320444460.5
n÷3 213629640.33333
n÷3 160222230.25
n÷5 128177784.2

Exponentiation

ny
n2 410738609060544241
n3 2.6323782397385E+26
n4 1.6870620497299E+35
n5 1.0812193767114E+44

Nth Root

y√n
2√n 25315.784028941
3√n 862.17267523358
4√n 159.10934613951
5√n 57.724017915543

Divisors of 640888921

1, 907, 706603, 640888921

4 divisors

τ Total Divisors 4
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -640888920
Sum of the proper positive divisors of n
A Arithmetic Mean 0.25
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 4
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 640888921 can be divided by 4 positive divisors. The sum of these divisors (counting 640888921) is 1, the average is 0.25.

Base conversion 640888921

Base System Value
2 Binary 100110001100110011000001011001
3 Ternary 1122122221112022201
4 Quaternary 212030303001121
5 Quinary 2303031421141
6 Senary 143332250201
8 Octal 4614630131
10 Decimal 640888921
12 Duodecimal 15a770961
16 Hexadecimal 26333059
20 Vigesimal a05b261
36 Base36 alkh21

Cryptographic Hash Functions

md5 6e9649b99838ea04d641c14af05f518e
sha1 d684af0d86aabeb9539dca2f316ebdb6855baac9
sha256 f944f4de14de60de076f67816a3f14645f7db53c22f23e05ac97d99c7d562002
sha512 fa71744edf178c3e3efc3252174b0d212039b5b09d07b8911da0e140f97f1294f9c6674d646fdb57db6d7b0966659ca885c50a6ae6a13725f9b71abf7f2953e6
ripemd-160 fcb8a9b3e21c770e3c87f6346403a905e7f81c24

640888921 as geometric shapes

Circle

Radius = n
Diameter 1281777842
Circumference 4026823851.9614
Area 1.2903733967703E+18

Sphere

Radius = n
Volume 1.102648018591E+27
Surface area 5.1614935870812E+18
Circumference 4026823851.9614

Square

Length = n
Perimeter 2563555684
Area 410738609060544241
Diagonal 906353804.05286

Cube

Length = n
Surface area 2464431654363265446
Volume 2.6323782397385E+26
Space diagonal 1110052173.18

Equilateral Triangle

Length = n
Perimeter 1922666763
Area 1.7785503488076E+17
Altitude 555026086.59

Triangular Pyramid

Length = n
Surface area 1.7785503488076E+17
Volume 3.1022875066117E+25
Height 302117934.68429