161801972 (number)

161801972 is an even 9-digits composite number following 161801971 and preceding 161801973. In scientific notation, it is written as 1.61801972 × 10^8. The sum of its digits is 35. It has a total of 4 prime factors and 12 positive divisors. There are 80874360 positive integers (up to 161801972) that are relatively prime to 161801972.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 1.61801972 × 10^8
Engineering notation 1.61801972 × 10^6

Prime Factorization of 161801972

Prime Factorization 2 × 2 × 4691 × 8623

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 80900986
Product of the distinct prime numbers

The prime factorization of 161801972 is 2 × 2 × 4691 × 8623. Since it has a total of 4 prime factors.

Most popular turbo-numbers

Basic calculations (n = 161801972)

Multiplication

n×y
n×2 323603944
n×3 485405916
n×4 647207888
n×5 809009860

Division

n÷y
n÷2 80900986
n÷3 53933990.666667
n÷3 40450493
n÷5 32360394.4

Exponentiation

ny
n2 26179878143088784
n3 4.2359559102715E+24
n4 6.8538601958698E+32
n5 1.108968095504E+41

Nth Root

y√n
2√n 12720.14040803
3√n 544.91396335647
4√n 112.78359990721
5√n 43.832552542838

Divisors of 161801972

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 -161801971
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 161801972 can be divided by 12 positive divisors. The sum of these divisors (counting 161801972) is 1, the average is 0.083333333333333.

Base conversion 161801972

Base System Value
2 Binary 1001101001001110011011110100
3 Ternary 102021110101120122
4 Quaternary 21221032123310
5 Quinary 312410130342
6 Senary 24015551112
8 Octal 1151163364
10 Decimal 161801972
12 Duodecimal 4622b498
16 Hexadecimal 9a4e6f4
20 Vigesimal 2ab54ic
36 Base36 2obz78

Cryptographic Hash Functions

md5 1534f1369277bd969e0fef66a363c69f
sha1 96f994a5eb75b38086ea4b0643781dbf84fc9b90
sha256 21ca9513f53f76572332f2e481dc44da2fd41b6f077b70defff6132cd6c5ba2b
sha512 8fc7b0135745930fa3421f2aa4f2d382cf3d3a35567027ea3a401175186959e080360d06fd3390f86a92be251157e86c3448883f3bf427105aa8cd532e2b53fd
ripemd-160 792450d7763edb0807df5a67974da8fc6f25cfa0

161801972 as geometric shapes

Circle

Radius = n
Diameter 323603944
Circumference 1016631773.1431
Area 8.2246512846204E+16

Sphere

Radius = n
Volume 1.7743530624852E+25
Surface area 3.2898605138481E+17
Circumference 1016631773.1431

Square

Length = n
Perimeter 647207888
Area 26179878143088784
Diagonal 228822543.22111

Cube

Length = n
Surface area 157079268858532704
Volume 4.2359559102715E+24
Space diagonal 280249236.26884

Equilateral Triangle

Length = n
Perimeter 485405916
Area 1.1336219769948E+16
Altitude 140124618.13442

Triangular Pyramid

Length = n
Surface area 1.1336219769948E+16
Volume 4.9921219149336E+23
Height 76274181.073704