161812971 (number)

161812971 is an odd 9-digits composite number following 161812970 and preceding 161812972. In scientific notation, it is written as 1.61812971 × 10^8. The sum of its digits is 36. It has a total of 5 prime factors and 12 positive divisors. There are 107875152 positive integers (up to 161812971) that are relatively prime to 161812971.

Interesting facts

Basic properties

Name

Name one hundred sixty-one million eight hundred twelve thousand nine hundred seventy-one

Notation

Scientific notation 1.61812971 × 10^8
Engineering notation 1.61812971 × 10^6

Prime Factorization of 161812971

Prime Factorization 3 × 3 × 3 × 9 × 665897

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 17979219
Product of the distinct prime numbers

The prime factorization of 161812971 is 3 × 3 × 3 × 9 × 665897. Since it has a total of 5 prime factors.

Most popular turbo-numbers

Basic calculations (n = 161812971)

Multiplication

n×y
n×2 323625942
n×3 485438913
n×4 647251884
n×5 809064855

Division

n÷y
n÷2 80906485.5
n÷3 53937657
n÷3 40453242.75
n÷5 32362594.2

Exponentiation

ny
n2 26183437583846841
n3 4.2368198264353E+24
n4 6.855724037072E+32
n5 1.1093450747947E+41

Nth Root

y√n
2√n 12720.572746539
3√n 544.92631049251
4√n 112.78551656369
5√n 43.83314845787

Divisors of 161812971

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 -161812970
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 161812971 can be divided by 12 positive divisors. The sum of these divisors (counting 161812971) is 1, the average is 0.083333333333333.

Base conversion 161812971

Base System Value
2 Binary 1001101001010001000111101011
3 Ternary 102021110221200000
4 Quaternary 21221101013223
5 Quinary 312411003341
6 Senary 24020114043
8 Octal 1151210753
10 Decimal 161812971
12 Duodecimal 46235923
16 Hexadecimal 9a511eb
20 Vigesimal 2ab6c8b
36 Base36 2oc7or

Cryptographic Hash Functions

md5 5399cb672d16069d067ae1f688688b91
sha1 6f8f5470291a7977ed7d6b60d005d08af4a32d14
sha256 a4157b8d459dd2ffca8d275d80e6f146b12f1ec1133ee85e5e44abc1d980eeba
sha512 d5100bb7a52c97b38ac2ef873759d43998d2a7d9fee4b4d01202679cf102a8c83d65847d8350d539e9add2f296276b4db90f3a06001636e35f2bf2c2f5965184
ripemd-160 ebe4ff1cf4f085773c7ac33f68e77f9e8d3a7858

161812971 as geometric shapes

Circle

Radius = n
Diameter 323625942
Circumference 1016700881.8983
Area 8.225769515914E+16

Sphere

Radius = n
Volume 1.7747149388417E+25
Surface area 3.2903078063656E+17
Circumference 1016700881.8983

Square

Length = n
Perimeter 647251884
Area 26183437583846841
Diagonal 228838098.15608

Cube

Length = n
Surface area 157100625503081046
Volume 4.2368198264353E+24
Space diagonal 280268287.09567

Equilateral Triangle

Length = n
Perimeter 485438913
Area 1.1337761053008E+16
Altitude 140134143.54783

Triangular Pyramid

Length = n
Surface area 1.1337761053008E+16
Volume 4.9931400498967E+23
Height 76279366.052028