638968021 (number)

638968021 is an odd 9-digits composite number following 638968020 and preceding 638968022. In scientific notation, it is written as 6.38968021 × 10^8. The sum of its digits is 43. It has a total of 2 prime factors and 4 positive divisors. There are 637405344 positive integers (up to 638968021) that are relatively prime to 638968021.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 6.38968021 × 10^8
Engineering notation 6.38968021 × 10^6

Prime Factorization of 638968021

Prime Factorization 409 × 1562269

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 638968021
Product of the distinct prime numbers

The prime factorization of 638968021 is 409 × 1562269. Since it has a total of 2 prime factors.

Most popular turbo-numbers

3, 9, 77, 2, 590, 314, 4395, 8172, 16065, 29082, 25497, 576306, 1680227, 9791427, 75043672, 54707164, 175960803, 451995854, 4114008211, 7141948564

Basic calculations (n = 638968021)

Multiplication

n×y
n×2 1277936042
n×3 1916904063
n×4 2555872084
n×5 3194840105

Division

n÷y
n÷2 319484010.5
n÷3 212989340.33333
n÷3 159742005.25
n÷5 127793604.2

Exponentiation

ny
n2 408280131860656441
n3 2.6087794786862E+26
n4 1.6669266607216E+35
n5 1.0651128295534E+44

Nth Root

y√n
2√n 25277.816776771
3√n 861.31043279506
4√n 158.98998954894
5√n 57.689373771089

Divisors of 638968021

1, 409, 1562269, 638968021

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 -638968020
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 638968021 can be divided by 4 positive divisors. The sum of these divisors (counting 638968021) is 1, the average is 0.25.

Base conversion 638968021

Base System Value
2 Binary 100110000101011110000011010101
3 Ternary 1122112022221100021
4 Quaternary 212011132003111
5 Quinary 2302033434041
6 Senary 143223145141
8 Octal 4605360325
10 Decimal 638968021
12 Duodecimal 159ba51b1
16 Hexadecimal 2615e0d5
20 Vigesimal 9jdb011
36 Base36 akfavp

Cryptographic Hash Functions

md5 312ca20750fdc9a8db6c2dd0b2fb7e8c
sha1 f8d2b8024131974f42d2dd102bc19a28c37585e2
sha256 24fc134d29aff0556b025db7dd7d8882042c2c023da83891ad22948dac90c4f1
sha512 7a11ce18ba1ec80840ae6cc2a15402a529199cc90d8e691cf6d561aa58fe42ccedbf5cb407ffabdc5b824f87ae60c4cebab1561de341f1c4f2de51186d2dcbf0
ripemd-160 3c6745750afba48a9f6885afc11ae4232d3c611f

638968021 as geometric shapes

Circle

Radius = n
Diameter 1277936042
Circumference 4014754481.3048
Area 1.2826498628601E+18

Sphere

Radius = n
Volume 1.0927629926769E+27
Surface area 5.1305994514404E+18
Circumference 4014754481.3048

Square

Length = n
Perimeter 2555872084
Area 408280131860656441
Diagonal 903637241.2209

Cube

Length = n
Surface area 2449680791163938646
Volume 2.6087794786862E+26
Space diagonal 1106725076.7837

Equilateral Triangle

Length = n
Perimeter 1916904063
Area 1.7679048302589E+17
Altitude 553362538.39187

Triangular Pyramid

Length = n
Surface area 1.7679048302589E+17
Volume 3.0744760999989E+25
Height 301212413.7403