161997908 (number)

161997908 is an even 9-digits composite number following 161997907 and preceding 161997909. In scientific notation, it is written as 1.61997908 × 10^8. The sum of its digits is 50. It has a total of 4 prime factors and 12 positive divisors. There are 79275480 positive integers (up to 161997908) that are relatively prime to 161997908.

Interesting facts

Basic properties

Name

Name one hundred sixty-one million nine hundred ninety-seven thousand nine hundred eight

Notation

Scientific notation 1.61997908 × 10^8
Engineering notation 1.61997908 × 10^6

Prime Factorization of 161997908

Prime Factorization 2 × 2 × 47 × 861691

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 80998954
Product of the distinct prime numbers

The prime factorization of 161997908 is 2 × 2 × 47 × 861691. Since it has a total of 4 prime factors.

Most popular turbo-numbers

Basic calculations (n = 161997908)

Multiplication

n×y
n×2 323995816
n×3 485993724
n×4 647991632
n×5 809989540

Division

n÷y
n÷2 80998954
n÷3 53999302.666667
n÷3 40499477
n÷5 32399581.6

Exponentiation

ny
n2 26243322196376464
n3 4.251363294783E+24
n4 6.8871195990283E+32
n5 1.1156989671884E+41

Nth Root

y√n
2√n 12727.839879571
3√n 545.13383128628
4√n 112.81772856945
5√n 43.843163313339

Divisors of 161997908

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 -161997907
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 161997908 can be divided by 12 positive divisors. The sum of these divisors (counting 161997908) is 1, the average is 0.083333333333333.

Base conversion 161997908

Base System Value
2 Binary 1001101001111110010001010100
3 Ternary 102021211100100112
4 Quaternary 21221332101110
5 Quinary 312432413113
6 Senary 24024102152
8 Octal 1151762124
10 Decimal 161997908
12 Duodecimal 46304958
16 Hexadecimal 9a7e454
20 Vigesimal 2ac9ef8
36 Base36 2og6dw

Cryptographic Hash Functions

md5 874eab5603e92555606285accf5ce45e
sha1 f41b74070a80451cac5c713a04efb591aa957800
sha256 bb62e2d5c6fadb583c5b67bdd136d3bfe732cbfed7a40ac98d80187bd6158e15
sha512 9118d1735635deaefaec20a4d26da04c45b674e50f17413276fea9c1809e524c9ed42d552c1ad14b110d7e173b24642f1ca2dc283639c29ce40808dc6654ede1
ripemd-160 5a684ff587ef13ef17454d861d58067787033dc4

161997908 as geometric shapes

Circle

Radius = n
Diameter 323995816
Circumference 1017862875.3394
Area 8.2445828217926E+16

Sphere

Radius = n
Volume 1.7808068926175E+25
Surface area 3.2978331287171E+17
Circumference 1017862875.3394

Square

Length = n
Perimeter 647991632
Area 26243322196376464
Diagonal 229099638.56967

Cube

Length = n
Surface area 157459933178258784
Volume 4.251363294783E+24
Space diagonal 280588607.37587

Equilateral Triangle

Length = n
Perimeter 485993724
Area 1.1363691850881E+16
Altitude 140294303.68793

Triangular Pyramid

Length = n
Surface area 1.1363691850881E+16
Volume 5.0102796917143E+23
Height 76366546.18989