642688891 (number)

642688891 is an odd 9-digits composite number following 642688890 and preceding 642688892. In scientific notation, it is written as 6.42688891 × 10^8. The sum of its digits is 52. It has a total of 2 prime factors and 4 positive divisors. There are 593251272 positive integers (up to 642688891) that are relatively prime to 642688891.

Interesting facts

Basic properties

Name

Name six hundred forty-two million six hundred eighty-eight thousand eight hundred ninety-one

Notation

Scientific notation 6.42688891 × 10^8
Engineering notation 6.42688891 × 10^6

Prime Factorization of 642688891

Prime Factorization 13 × 49437607

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 642688891
Product of the distinct prime numbers

The prime factorization of 642688891 is 13 × 49437607. Since it has a total of 2 prime factors.

Most popular turbo-numbers

10, 5, 25, 77, 852, 52, 3843, 8810, 38109, 81173, 475171, 5226, 3030267, 3969930, 656624, 80827968, 609809665, 219547579, 4679954615, 7411331978

Basic calculations (n = 642688891)

Multiplication

n×y
n×2 1285377782
n×3 1928066673
n×4 2570755564
n×5 3213444455

Division

n÷y
n÷2 321344445.5
n÷3 214229630.33333
n÷3 160672222.75
n÷5 128537778.2

Exponentiation

ny
n2 413049010614809881
n3 2.6546201056068E+26
n4 1.7060948516987E+35
n5 1.0964882081791E+44

Nth Root

y√n
2√n 25351.30945336
3√n 862.97907309344
4√n 159.22094539777
5√n 57.7564057345

Divisors of 642688891

1, 13, 49437607, 642688891

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 -642688890
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 642688891 can be divided by 4 positive divisors. The sum of these divisors (counting 642688891) is 1, the average is 0.25.

Base conversion 642688891

Base System Value
2 Binary 100110010011101010011101111011
3 Ternary 1122210022222102021
4 Quaternary 212103222131323
5 Quinary 2304012021031
6 Senary 143435015311
8 Octal 4623523573
10 Decimal 642688891
12 Duodecimal 15b29a537
16 Hexadecimal 264ea77b
20 Vigesimal a0gg24b
36 Base36 amn1x7

Cryptographic Hash Functions

md5 e78857fcc776b4557f4120fc467415c1
sha1 96cb15063dcd9793ddd012922ad3aecbfa2f9ac5
sha256 3d8f14a7b64c4b237394005180c9dcf0e3b65c7d3429c4e399a2fb876bb9bba6
sha512 0bd4793773db9b738eff33b8e72d1d154bbce6d5c871de6e6dcbec959ed9bb000cc0b2f66224a636d9259586410e22beaa3bd187d30ff9b03524f5a999a26d6b
ripemd-160 47968ed10d0269b7017f1e441f9c10c790f4eccd

642688891 as geometric shapes

Circle

Radius = n
Diameter 1285377782
Circumference 4038133397.0187
Area 1.29763173732E+18

Sphere

Radius = n
Volume 1.1119646695795E+27
Surface area 5.1905269492801E+18
Circumference 4038133397.0187

Square

Length = n
Perimeter 2570755564
Area 413049010614809881
Diagonal 908899346.03872

Cube

Length = n
Surface area 2478294063688859286
Volume 2.6546201056068E+26
Space diagonal 1113169812.6721

Equilateral Triangle

Length = n
Perimeter 1928066673
Area 1.7885546810023E+17
Altitude 556584906.33605

Triangular Pyramid

Length = n
Surface area 1.7885546810023E+17
Volume 3.1284997969145E+25
Height 302966448.67957