161720491 (number)

161720491 is an odd 9-digits composite number following 161720490 and preceding 161720492. In scientific notation, it is written as 1.61720491 × 10^8. The sum of its digits is 31. It has a total of 3 prime factors and 8 positive divisors. There are 160784352 positive integers (up to 161720491) that are relatively prime to 161720491.

Interesting facts

Basic properties

Name

Name one hundred sixty-one million seven hundred twenty thousand four hundred ninety-one

Notation

Scientific notation 1.61720491 × 10^8
Engineering notation 1.61720491 × 10^6

Prime Factorization of 161720491

Prime Factorization 523 × 373 × 829

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 161720491
Product of the distinct prime numbers

The prime factorization of 161720491 is 523 × 373 × 829. Since it has a total of 3 prime factors.

Most popular turbo-numbers

Basic calculations (n = 161720491)

Multiplication

n×y
n×2 323440982
n×3 485161473
n×4 646881964
n×5 808602455

Division

n÷y
n÷2 80860245.5
n÷3 53906830.333333
n÷3 40430122.75
n÷5 32344098.2

Exponentiation

ny
n2 26153517209281081
n3 4.2295596444619E+24
n4 6.8400646241616E+32
n5 1.1061786094911E+41

Nth Root

y√n
2√n 12716.937170561
3√n 544.8224778835
4√n 112.76939820076
5√n 43.828136972604

Divisors of 161720491

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 -161720490
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 161720491 can be divided by 8 positive divisors. The sum of these divisors (counting 161720491) is 1, the average is 0.125.

Base conversion 161720491

Base System Value
2 Binary 1001101000111010100010101011
3 Ternary 102021022020210211
4 Quaternary 21220322202223
5 Quinary 312400023431
6 Senary 24014121551
8 Octal 1150724253
10 Decimal 161720491
12 Duodecimal 461b02b7
16 Hexadecimal 9a3a8ab
20 Vigesimal 2aaf14b
36 Base36 2oa8bv

Cryptographic Hash Functions

md5 7ec8a498fe10d57d15480bf71eacb9be
sha1 4c944aeabba105d430e72712122df25be0440907
sha256 d761e6584c748d7804b4f01ef2fe082acfd58ed19ea206c28fffa9b72f294f2e
sha512 c376cbdf3789da37c3d23665c0a99ca6c5b4724dda26c0b3770f81afe3b3b473c37748fa470f88864d0d8864dfe3f6734307cdffe24cb3c154ed18a912e5376b
ripemd-160 f12be58c0033ba46114f3126cd02272e5b845b10

161720491 as geometric shapes

Circle

Radius = n
Diameter 323440982
Circumference 1016119812.9211
Area 8.2163697530212E+16

Sphere

Radius = n
Volume 1.7716738009282E+25
Surface area 3.2865479012085E+17
Circumference 1016119812.9211

Square

Length = n
Perimeter 646881964
Area 26153517209281081
Diagonal 228707311.68584

Cube

Length = n
Surface area 156921103255686486
Volume 4.2295596444619E+24
Space diagonal 280108107.03699

Equilateral Triangle

Length = n
Perimeter 485161473
Area 1.1324805150775E+16
Altitude 140054053.51849

Triangular Pyramid

Length = n
Surface area 1.1324805150775E+16
Volume 4.9845838433866E+23
Height 76235770.561945