638961387 (number)

638961387 is an odd 9-digits composite number following 638961386 and preceding 638961388. In scientific notation, it is written as 6.38961387 × 10^8. The sum of its digits is 51. It has a total of 3 prime factors and 8 positive divisors. There are 425915880 positive integers (up to 638961387) that are relatively prime to 638961387.

Interesting facts

Basic properties

Name

Name six hundred thirty-eight million nine hundred sixty-one thousand three hundred eighty-seven

Notation

Scientific notation 6.38961387 × 10^8
Engineering notation 6.38961387 × 10^6

Prime Factorization of 638961387

Prime Factorization 3 × 14431 × 14759

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 638961387
Product of the distinct prime numbers

The prime factorization of 638961387 is 3 × 14431 × 14759. Since it has a total of 3 prime factors.

Most popular turbo-numbers

Basic calculations (n = 638961387)

Multiplication

n×y
n×2 1277922774
n×3 1916884161
n×4 2555845548
n×5 3194806935

Division

n÷y
n÷2 319480693.5
n÷3 212987129
n÷3 159740346.75
n÷5 127792277.4

Exponentiation

ny
n2 408271654076963769
n3 2.608698223618E+26
n4 1.6668574352274E+35
n5 1.0650575387442E+44

Nth Root

y√n
2√n 25277.685554655
3√n 861.30745197129
4√n 158.98957687426
5√n 57.68925398015

Divisors of 638961387

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 -638961386
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 638961387 can be divided by 8 positive divisors. The sum of these divisors (counting 638961387) is 1, the average is 0.125.

Base conversion 638961387

Base System Value
2 Binary 100110000101011100011011101011
3 Ternary 1122112022121020120
4 Quaternary 212011130123223
5 Quinary 2302033231022
6 Senary 143223054323
8 Octal 4605343353
10 Decimal 638961387
12 Duodecimal 159ba13a3
16 Hexadecimal 2615c6eb
20 Vigesimal 9jda397
36 Base36 akf5rf

Cryptographic Hash Functions

md5 4981e065cf828719db004d249784a57d
sha1 81bf62f31f3cc2c716229674c9be9a502706c27d
sha256 222daeb8497f54eb0aff44ffd117063e5fd3ae4fb976672d07bc683452aaf26f
sha512 b65590a82dcbc95ee53db402243e5acd117dead805671792d28dcec261a365583b9d65f112059baa1a3945abeefd0af1eb213f2613e4502362d9ed847de6e49d
ripemd-160 ce2f893ec028ce1b6527fdf79b9b38dfcc443fc2

638961387 as geometric shapes

Circle

Radius = n
Diameter 1277922774
Circumference 4014712798.6535
Area 1.2826232291171E+18

Sphere

Radius = n
Volume 1.0927289566335E+27
Surface area 5.1304929164686E+18
Circumference 4014712798.6535

Square

Length = n
Perimeter 2555845548
Area 408271654076963769
Diagonal 903627859.32812

Cube

Length = n
Surface area 2449629924461782614
Volume 2.608698223618E+26
Space diagonal 1106713586.3587

Equilateral Triangle

Length = n
Perimeter 1916884161
Area 1.7678681203787E+17
Altitude 553356793.17934

Triangular Pyramid

Length = n
Surface area 1.7678681203787E+17
Volume 3.0743803399827E+25
Height 301209286.44271