161812972 (number)

161812972 is an even 9-digits composite number following 161812971 and preceding 161812973. In scientific notation, it is written as 1.61812972 × 10^8. The sum of its digits is 37. It has a total of 3 prime factors and 6 positive divisors. There are 80906484 positive integers (up to 161812972) that are relatively prime to 161812972.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 1.61812972 × 10^8
Engineering notation 1.61812972 × 10^6

Prime Factorization of 161812972

Prime Factorization 2 × 2 × 40453243

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 80906486
Product of the distinct prime numbers

The prime factorization of 161812972 is 2 × 2 × 40453243. Since it has a total of 3 prime factors.

Most popular turbo-numbers

9, 2, 71, 86, 884, 690, 9822, 1141, 45119, 38035, 461771, 840638, 6001281, 389964, 49335945, 15393266, 591558127, 625258721, 8412446279, 818867894

Basic calculations (n = 161812972)

Multiplication

n×y
n×2 323625944
n×3 485438916
n×4 647251888
n×5 809064860

Division

n÷y
n÷2 80906486
n÷3 53937657.333333
n÷3 40453243
n÷5 32362594.4

Exponentiation

ny
n2 26183437907472784
n3 4.2368199049856E+24
n4 6.8557242065448E+32
n5 1.1093451090734E+41

Nth Root

y√n
2√n 12720.572785846
3√n 544.92631161506
4√n 112.78551673795
5√n 43.833148512047

Divisors of 161812972

1, 2, 4, 40453243, 80906486, 161812972

6 divisors

τ Total Divisors 6
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -161812971
Sum of the proper positive divisors of n
A Arithmetic Mean 0.16666666666667
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 6
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 161812972 can be divided by 6 positive divisors. The sum of these divisors (counting 161812972) is 1, the average is 0.16666666666667.

Base conversion 161812972

Base System Value
2 Binary 1001101001010001000111101100
3 Ternary 102021110221200001
4 Quaternary 21221101013230
5 Quinary 312411003342
6 Senary 24020114044
8 Octal 1151210754
10 Decimal 161812972
12 Duodecimal 46235924
16 Hexadecimal 9a511ec
20 Vigesimal 2ab6c8c
36 Base36 2oc7os

Cryptographic Hash Functions

md5 60acc9f82cb798460e288ab74ad3477d
sha1 7941f69a22271e6907228fdf69a068e44e017336
sha256 15f476068e76d33d864013b1e06daf99aaa3590f105d4b5df5f2866f0019fe0a
sha512 9f017d69d5ddcfbb60d7fb7bfd6f709242c531616c070a06daae65332690fef090ce905a7ec726999ab8c446f557c9d5d53c1d73fd265af3e13bab05f6e5fb75
ripemd-160 c0750a83ef3d21a93409592af98ea882b6ac7273

161812972 as geometric shapes

Circle

Radius = n
Diameter 323625944
Circumference 1016700888.1815
Area 8.2257696175841E+16

Sphere

Radius = n
Volume 1.7747149717448E+25
Surface area 3.2903078470336E+17
Circumference 1016700888.1815

Square

Length = n
Perimeter 647251888
Area 26183437907472784
Diagonal 228838099.5703

Cube

Length = n
Surface area 157100627444836704
Volume 4.2368199049856E+24
Space diagonal 280268288.82772

Equilateral Triangle

Length = n
Perimeter 485438916
Area 1.1337761193142E+16
Altitude 140134144.41386

Triangular Pyramid

Length = n
Surface area 1.1337761193142E+16
Volume 4.9931401424691E+23
Height 76279366.523433