156987991 (number)

156987991 is an odd 9-digits composite number following 156987990 and preceding 156987992. In scientific notation, it is written as 1.56987991 × 10^8. The sum of its digits is 55. It has a total of 2 prime factors and 4 positive divisors. There are 151574584 positive integers (up to 156987991) that are relatively prime to 156987991.

Interesting facts

Basic properties

Name

Name one hundred fifty-six million nine hundred eighty-seven thousand nine hundred ninety-one

Notation

Scientific notation 1.56987991 × 10^8
Engineering notation 1.56987991 × 10^6

Prime Factorization of 156987991

Prime Factorization 29 × 5413379

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 156987991
Product of the distinct prime numbers

The prime factorization of 156987991 is 29 × 5413379. Since it has a total of 2 prime factors.

Most popular turbo-numbers

1, 1, 40, 66, 139, 508, 3432, 7466, 79162, 78620, 730083, 762197, 6947860, 127715, 89220511, 89699070, 64834900, 314169180, 6711051853, 9853363199

Basic calculations (n = 156987991)

Multiplication

n×y
n×2 313975982
n×3 470963973
n×4 627951964
n×5 784939955

Division

n÷y
n÷2 78493995.5
n÷3 52329330.333333
n÷3 39246997.75
n÷5 31397598.2

Exponentiation

ny
n2 24645229318216081
n3 3.869005038401E+24
n4 6.0738732814746E+32
n5 9.5352516404727E+40

Nth Root

y√n
2√n 12529.484865708
3√n 539.45531611698
4√n 111.93518153694
5√n 43.568568045763

Divisors of 156987991

1, 29, 5413379, 156987991

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 -156987990
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 156987991 can be divided by 4 positive divisors. The sum of these divisors (counting 156987991) is 1, the average is 0.25.

Base conversion 156987991

Base System Value
2 Binary 1001010110110111001001010111
3 Ternary 101221101211001001
4 Quaternary 21112313021113
5 Quinary 310142103431
6 Senary 23324444131
8 Octal 1126671127
10 Decimal 156987991
12 Duodecimal 446a9647
16 Hexadecimal 95b7257
20 Vigesimal 29139jb
36 Base36 2lgspj

Cryptographic Hash Functions

md5 688b137880ac9a1d81fd0ac7834ee6e9
sha1 0f4a63e83d385fc048d46a8e2afd23bdbcfc680a
sha256 9645741719d32bdceba58315d10abe0c53f1baab6dd8fe7d07f77bc55930b485
sha512 b4a74663adec1cefba2dfe4a7c5004dc21573d3c86e6a3693ffd26ee8a3df2c10ec8ec97661bcd010c276f9ea81e87496d6f75d36a39e0cf471de9cc2995fae3
ripemd-160 4f15d722eed021125a286d62267d7a4fb71842b8

156987991 as geometric shapes

Circle

Radius = n
Diameter 313975982
Circumference 986384638.45484
Area 7.7425271372143E+16

Sphere

Radius = n
Volume 1.6206450407123E+25
Surface area 3.0970108548857E+17
Circumference 986384638.45484

Square

Length = n
Perimeter 627951964
Area 24645229318216081
Diagonal 222014546.00191

Cube

Length = n
Surface area 147871375909296486
Volume 3.869005038401E+24
Space diagonal 271911176.59017

Equilateral Triangle

Length = n
Perimeter 470963973
Area 1.0671697335834E+16
Altitude 135955588.29508

Triangular Pyramid

Length = n
Surface area 1.0671697335834E+16
Volume 4.5596661651638E+23
Height 74004848.667302