161808725 (number)

161808725 is an odd 9-digits composite number following 161808724 and preceding 161808726. In scientific notation, it is written as 1.61808725 × 10^8. The sum of its digits is 38. It has a total of 3 prime factors and 8 positive divisors. There are 119489280 positive integers (up to 161808725) that are relatively prime to 161808725.

Interesting facts

Basic properties

Name

Name one hundred sixty-one million eight hundred eight thousand seven hundred twenty-five

Notation

Scientific notation 1.61808725 × 10^8
Engineering notation 1.61808725 × 10^6

Prime Factorization of 161808725

Prime Factorization 65 × 5 × 497873

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 161808725
Product of the distinct prime numbers

The prime factorization of 161808725 is 65 × 5 × 497873. Since it has a total of 3 prime factors.

Most popular turbo-numbers

Basic calculations (n = 161808725)

Multiplication

n×y
n×2 323617450
n×3 485426175
n×4 647234900
n×5 809043625

Division

n÷y
n÷2 80904362.5
n÷3 53936241.666667
n÷3 40452181.25
n÷5 32361745

Exponentiation

ny
n2 26182063486125625
n3 4.236486310559E+24
n4 6.8550044839151E+32
n5 1.1091995354116E+41

Nth Root

y√n
2√n 12720.405850444
3√n 544.921544131
4√n 112.78477667861
5√n 43.832918417595

Divisors of 161808725

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 -161808724
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 161808725 can be divided by 8 positive divisors. The sum of these divisors (counting 161808725) is 1, the average is 0.125.

Base conversion 161808725

Base System Value
2 Binary 1001101001010000000101010101
3 Ternary 102021110201211202
4 Quaternary 21221100011111
5 Quinary 312410334400
6 Senary 24020042245
8 Octal 1151200525
10 Decimal 161808725
12 Duodecimal 46233385
16 Hexadecimal 9a50155
20 Vigesimal 2ab61g5
36 Base36 2oc4et

Cryptographic Hash Functions

md5 7d785307d8c1846c7b3fb4dd323aad96
sha1 2e3521b002db877fa557ffea82e24dca09f6a0ff
sha256 b7515705755792cf8568562656eee023329200e79a2d443ec1cf30120aa56ac0
sha512 d21fec442774bf57ce00a5579b9136edeab33753c0eda711d6030956f58f3d855ae3059a99cfe2656730b4b772489d559131e7391464600340d8b1b4441353ca
ripemd-160 f5eaa7f39955f81858288e84704ed5e58f8159a1

161808725 as geometric shapes

Circle

Radius = n
Diameter 323617450
Circumference 1016674203.4935
Area 8.2253378303834E+16

Sphere

Radius = n
Volume 1.7745752360381E+25
Surface area 3.2901351321534E+17
Circumference 1016674203.4935

Square

Length = n
Perimeter 647234900
Area 26182063486125625
Diagonal 228832093.4053

Cube

Length = n
Surface area 157092380916753750
Volume 4.236486310559E+24
Space diagonal 280260932.80794

Equilateral Triangle

Length = n
Perimeter 485426175
Area 1.1337166051241E+16
Altitude 140130466.40397

Triangular Pyramid

Length = n
Surface area 1.1337166051241E+16
Volume 4.9927469976671E+23
Height 76277364.468433