638632721 (number)

638632721 is an odd 9-digits composite number following 638632720 and preceding 638632722. In scientific notation, it is written as 6.38632721 × 10^8. The sum of its digits is 38. It has a total of 2 prime factors and 4 positive divisors. There are 632980992 positive integers (up to 638632721) that are relatively prime to 638632721.

Interesting facts

Basic properties

Name

Name six hundred thirty-eight million six hundred thirty-two thousand seven hundred twenty-one

Notation

Scientific notation 6.38632721 × 10^8
Engineering notation 6.38632721 × 10^6

Prime Factorization of 638632721

Prime Factorization 113 × 5651617

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 638632721
Product of the distinct prime numbers

The prime factorization of 638632721 is 113 × 5651617. Since it has a total of 2 prime factors.

Most popular turbo-numbers

5, 8, 80, 17, 733, 55, 6170, 7153, 33849, 33205, 131744, 830222, 159901, 84162, 15439794, 45948110, 353694234, 549455371, 6255189537, 6336303046

Basic calculations (n = 638632721)

Multiplication

n×y
n×2 1277265442
n×3 1915898163
n×4 2554530884
n×5 3193163605

Division

n÷y
n÷2 319316360.5
n÷3 212877573.66667
n÷3 159658180.25
n÷5 127726544.2

Exponentiation

ny
n2 407851752331863841
n3 2.6046747435632E+26
n4 1.6634305188017E+35
n5 1.0623211584168E+44

Nth Root

y√n
2√n 25271.183609004
3√n 861.15974819684
4√n 158.96912784879
5√n 57.683317972415

Divisors of 638632721

1, 113, 5651617, 638632721

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 -638632720
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 638632721 can be divided by 4 positive divisors. The sum of these divisors (counting 638632721) is 1, the average is 0.25.

Base conversion 638632721

Base System Value
2 Binary 100110000100001100001100010001
3 Ternary 1122111200220101202
4 Quaternary 212010030030101
5 Quinary 2301442221341
6 Senary 143212040545
8 Octal 4604141421
10 Decimal 638632721
12 Duodecimal 159a63155
16 Hexadecimal 2610c311
20 Vigesimal 9jb91g1
36 Base36 ak845t

Cryptographic Hash Functions

md5 cdb4ee2c7ead558109dc9b31a4533439
sha1 d8486beae8440228ce4d0400bb90432e254edf0d
sha256 0165d4f06fa8be712446c06b7e16eee40dfce6223e3d20ed63857a8e106e674a
sha512 8dc028eb91f4c9d2f37d706e5da7ca2b9042b7be5b68f353032048c16fdb5a6faf5cbff17c322742e4f484895bc0974c0163787d28c1446b58e50c9564adac0e
ripemd-160 53d619fd39309463e3bdce247c32ba93c8802950

638632721 as geometric shapes

Circle

Radius = n
Diameter 1277265442
Circumference 4012647729.2713
Area 1.2813040688795E+18

Sphere

Radius = n
Volume 1.0910436052492E+27
Surface area 5.125216275518E+18
Circumference 4012647729.2713

Square

Length = n
Perimeter 2554530884
Area 407851752331863841
Diagonal 903163055.41343

Cube

Length = n
Surface area 2447110513991183046
Volume 2.6046747435632E+26
Space diagonal 1106144320.148

Equilateral Triangle

Length = n
Perimeter 1915898163
Area 1.766049892487E+17
Altitude 553072160.07398

Triangular Pyramid

Length = n
Surface area 1.766049892487E+17
Volume 3.0696386232647E+25
Height 301054351.80448