638991620 (number)

638991620 is an even 9-digits composite number following 638991619 and preceding 638991621. In scientific notation, it is written as 6.38991620 × 10^8. The sum of its digits is 44. It has a total of 4 prime factors and 12 positive divisors. There are 255596640 positive integers (up to 638991620) that are relatively prime to 638991620.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 6.38991620 × 10^8
Engineering notation 6.38991620 × 10^6

Prime Factorization of 638991620

Prime Factorization 2 × 2 × 5 × 31949581

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 319495810
Product of the distinct prime numbers

The prime factorization of 638991620 is 2 × 2 × 5 × 31949581. Since it has a total of 4 prime factors.

Most popular turbo-numbers

10, 7, 5, 96, 977, 696, 6918, 7528, 22182, 79527, 356356, 851820, 7625501, 6736168, 78678103, 55280373, 251002023, 816310976, 6805984450, 9078142044

Basic calculations (n = 638991620)

Multiplication

n×y
n×2 1277983240
n×3 1916974860
n×4 2555966480
n×5 3194958100

Division

n÷y
n÷2 319495810
n÷3 212997206.66667
n÷3 159747905
n÷5 127798324

Exponentiation

ny
n2 408310290430224400
n3 2.6090685394468E+26
n4 1.6671729327121E+35
n5 1.0653095330939E+44

Nth Root

y√n
2√n 25278.283565147
3√n 861.3210362546
4√n 158.99145752256
5√n 57.689799893015

Divisors of 638991620

1, 2, 4, 5, 10, 20, 31949581, 63899162, 127798324, 159747905, 319495810, 638991620

12 divisors

τ Total Divisors 12
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -638991619
Sum of the proper positive divisors of n
A Arithmetic Mean 0.083333333333333
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 12
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 638991620 can be divided by 12 positive divisors. The sum of these divisors (counting 638991620) is 1, the average is 0.083333333333333.

Base conversion 638991620

Base System Value
2 Binary 100110000101100011110100000100
3 Ternary 1122112101010201022
4 Quaternary 212011203310010
5 Quinary 2302040212440
6 Senary 143223450312
8 Octal 4605436404
10 Decimal 638991620
12 Duodecimal 159bb6998
16 Hexadecimal 26163d04
20 Vigesimal 9jddj10
36 Base36 akft38

Cryptographic Hash Functions

md5 0b8516ed33d5db6cb26cc1d09c0a2c04
sha1 8b3a0ccddc62cefe5ab387313c2833de928873b4
sha256 6e5f7e30cfc5cf61d246d8d92c761b81c13c05bfac2f5761b2b2bed0152cb21f
sha512 5401537d3706efc13d7f0beeb86dd535eef25ca08143e4bef3d0c63fd6efd8d857a2734b0b8d5fef1780eff367fb6f9e82cc40fb23ede468daf7513fd84cf5f2
ripemd-160 3940ddecbe80ea037d3a8504f97df22c14069402

638991620 as geometric shapes

Circle

Radius = n
Diameter 1277983240
Circumference 4014902758.1949
Area 1.2827446088007E+18

Sphere

Radius = n
Volume 1.0928840741651E+27
Surface area 5.1309784352028E+18
Circumference 4014902758.1949

Square

Length = n
Perimeter 2555966480
Area 408310290430224400
Diagonal 903670615.24676

Cube

Length = n
Surface area 2449861742581346400
Volume 2.6090685394468E+26
Space diagonal 1106765951.4507

Equilateral Triangle

Length = n
Perimeter 1916974860
Area 1.7680354206959E+17
Altitude 553382975.72537

Triangular Pyramid

Length = n
Surface area 1.7680354206959E+17
Volume 3.0748167613722E+25
Height 301223538.41559