642744981 (number)

642744981 is an odd 9-digits composite number following 642744980 and preceding 642744982. In scientific notation, it is written as 6.42744981 × 10^8. The sum of its digits is 45. It has a total of 3 prime factors and 8 positive divisors. There are 428325696 positive integers (up to 642744981) that are relatively prime to 642744981.

Interesting facts

Basic properties

Name

Name six hundred forty-two million seven hundred forty-four thousand nine hundred eighty-one

Notation

Scientific notation 6.42744981 × 10^8
Engineering notation 6.42744981 × 10^6

Prime Factorization of 642744981

Prime Factorization 9 × 2777 × 25717

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 642744981
Product of the distinct prime numbers

The prime factorization of 642744981 is 9 × 2777 × 25717. Since it has a total of 3 prime factors.

Most popular turbo-numbers

6, 7, 17, 68, 545, 139, 7982, 172, 7453, 74963, 526676, 702820, 7458648, 1586701, 87631807, 86727593, 74427099, 844064813, 3556597083, 3635707064

Basic calculations (n = 642744981)

Multiplication

n×y
n×2 1285489962
n×3 1928234943
n×4 2570979924
n×5 3213724905

Division

n÷y
n÷2 321372490.5
n÷3 214248327
n÷3 160686245.25
n÷5 128548996.2

Exponentiation

ny
n2 413121110600690361
n3 2.6553152038374E+26
n4 1.7066905202395E+35
n5 1.0969667660042E+44

Nth Root

y√n
2√n 25352.415683717
3√n 863.00417756146
4√n 159.2244192444
5√n 57.757413825275

Divisors of 642744981

1, 9, 2777, 24993, 25717, 231453, 71416109, 642744981

8 divisors

τ Total Divisors 8
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -642744980
Sum of the proper positive divisors of n
A Arithmetic Mean 0.125
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 8
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 642744981 can be divided by 8 positive divisors. The sum of these divisors (counting 642744981) is 1, the average is 0.125.

Base conversion 642744981

Base System Value
2 Binary 100110010011111000001010010101
3 Ternary 1122210102211100200
4 Quaternary 212103320022111
5 Quinary 2304020314411
6 Senary 143440131113
8 Octal 4623701225
10 Decimal 642744981
12 Duodecimal 15b306a99
16 Hexadecimal 264f8295
20 Vigesimal a0h3291
36 Base36 amo979

Cryptographic Hash Functions

md5 7810e1b01f3f1e81f118f333b7d54fbe
sha1 c2ae5066bd66b2e578f63e444777e5124ccff07b
sha256 6f77e9cab39a1a55b363f628d98cb4e4b6514b9a93ba1abdb796c1d167408dfb
sha512 dbe048d80d94c26870d98fe6c197671174fa1b61e9f3e5349083b3ff068aaf637b7f5d5a2729b6028f2884a388d3bc4716f066f9ad0894fd17877d6eea34edd4
ripemd-160 5bf779801f1b9cc5c1e2b03ddf317910d58761e6

642744981 as geometric shapes

Circle

Radius = n
Diameter 1285489962
Circumference 4038485820.8826
Area 1.297858246106E+18

Sphere

Radius = n
Volume 1.1122558316454E+27
Surface area 5.1914329844239E+18
Circumference 4038485820.8826

Square

Length = n
Perimeter 2570979924
Area 413121110600690361
Diagonal 908978669.27744

Cube

Length = n
Surface area 2478726663604142166
Volume 2.6553152038374E+26
Space diagonal 1113266963.4019

Equilateral Triangle

Length = n
Perimeter 1928234943
Area 1.7888668830992E+17
Altitude 556633481.70095

Triangular Pyramid

Length = n
Surface area 1.7888668830992E+17
Volume 3.1293189780353E+25
Height 302992889.75915