161561640 (number)

161561640 is an even 9-digits composite number following 161561639 and preceding 161561641. In scientific notation, it is written as 1.61561640 × 10^8. The sum of its digits is 30. It has a total of 7 prime factors and 64 positive divisors. There are 43005440 positive integers (up to 161561640) that are relatively prime to 161561640.

Interesting facts

Basic properties

Name

Name one hundred sixty-one million five hundred sixty-one thousand six hundred forty

Notation

Scientific notation 1.61561640 × 10^8
Engineering notation 1.61561640 × 10^6

Prime Factorization of 161561640

Prime Factorization 2 × 2 × 2 × 3 × 5 × 1571 × 857

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 7
Total number of prime factors
rad Radical 40390410
Product of the distinct prime numbers

The prime factorization of 161561640 is 2 × 2 × 2 × 3 × 5 × 1571 × 857. Since it has a total of 7 prime factors.

Most popular turbo-numbers

9, 3, 57, 23, 99, 194, 3227, 1403, 35625, 75177, 203727, 149895, 6576897, 7626110, 19239579, 72782541, 775132190, 716740489, 3472380579, 1422914892

Basic calculations (n = 161561640)

Multiplication

n×y
n×2 323123280
n×3 484684920
n×4 646246560
n×5 807808200

Division

n÷y
n÷2 80780820
n÷3 53853880
n÷3 40390410
n÷5 32312328

Exponentiation

ny
n2 26102163519489600
n3 4.2171083457569E+24
n4 6.8132294039817E+32
n5 1.1007565162035E+41

Nth Root

y√n
2√n 12710.689989139
3√n 544.64403430876
4√n 112.74169587663
5√n 43.819523493384

Divisors of 161561640

1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 857, 1571, 1714, 2571, 3142, 3428, 4285, 4713, 5142, 6284, 6856, 7855, 8570, 9426, 10284, 12568, 12855, 15710, 17140, 18852, 20568, 23565, 25710, 31420, 34280, 37704, 47130, 51420, 62840, 94260, 102840, 188520, 1346347, 2692694, 4039041, 5385388, 6731735, 8078082, 10770776, 13463470, 16156164, 20195205, 26926940, 32312328, 40390410, 53853880, 80780820, 161561640

64 divisors

τ Total Divisors 64
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -161561639
Sum of the proper positive divisors of n
A Arithmetic Mean 0.015625
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 64
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 161561640 can be divided by 64 positive divisors. The sum of these divisors (counting 161561640) is 1, the average is 0.015625.

Base conversion 161561640

Base System Value
2 Binary 1001101000010011110000101000
3 Ternary 102021000011220110
4 Quaternary 21220103300220
5 Quinary 312324433030
6 Senary 24010454320
8 Octal 1150236050
10 Decimal 161561640
12 Duodecimal 461343a0
16 Hexadecimal 9a13c28
20 Vigesimal 2a9f420
36 Base36 2o6trc

Cryptographic Hash Functions

md5 5a4f8addce9fc9b221bcc7c4d89f1bf6
sha1 9babeffae9be05c403eed52024ebd5f85b67105f
sha256 30aa40a1b580a7399a1cadb6b86d2df1b8be056a0519346ef92c307d079dadc6
sha512 b3e16cc0abee565ea76cbfbf8f0f77f366d5f571b6ebaa203dad69da708a87af215133123e7f85de9acd8b6d11b6dd9c8c56084463b87e0246b72652b2d2d142
ripemd-160 541ad901977133f887e716bc77f411ea17673a32

161561640 as geometric shapes

Circle

Radius = n
Diameter 323123280
Circumference 1015121722.6518
Area 8.2002365155628E+16

Sphere

Radius = n
Volume 1.7664582131229E+25
Surface area 3.2800946062251E+17
Circumference 1015121722.6518

Square

Length = n
Perimeter 646246560
Area 26102163519489600
Diagonal 228482662.44724

Cube

Length = n
Surface area 156612981116937600
Volume 4.2171083457569E+24
Space diagonal 279832969.03415

Equilateral Triangle

Length = n
Perimeter 484684920
Area 1.1302568350807E+16
Altitude 139916484.51708

Triangular Pyramid

Length = n
Surface area 1.1302568350807E+16
Volume 4.9699098471385E+23
Height 76160887.482413