261981013 (number)

261981013 is an odd 9-digits composite number following 261981012 and preceding 261981014. In scientific notation, it is written as 2.61981013 × 10^8. The sum of its digits is 31. It has a total of 3 prime factors and 8 positive divisors. There are 221478624 positive integers (up to 261981013) that are relatively prime to 261981013.

Interesting facts

Basic properties

Name

Name two hundred sixty-one million nine hundred eighty-one thousand thirteen

Notation

Scientific notation 2.61981013 × 10^8
Engineering notation 2.61981013 × 10^6

Prime Factorization of 261981013

Prime Factorization 73 × 7 × 512683

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 261981013
Product of the distinct prime numbers

The prime factorization of 261981013 is 73 × 7 × 512683. Since it has a total of 3 prime factors.

Most popular turbo-numbers

8, 1, 26, 82, 454, 952, 6692, 6203, 79743, 60863, 109765, 898576, 2873950, 3611467, 48187924, 85046918, 143194379, 938844444, 3296738685, 4291605213

Basic calculations (n = 261981013)

Multiplication

n×y
n×2 523962026
n×3 785943039
n×4 1047924052
n×5 1309905065

Division

n÷y
n÷2 130990506.5
n÷3 87327004.333333
n÷3 65495253.25
n÷5 52396202.6

Exponentiation

ny
n2 68634051172506169
n3 1.7980818252467E+25
n4 4.7106329803502E+33
n5 1.2340964000634E+42

Nth Root

y√n
2√n 16185.827535224
3√n 639.86733334105
4√n 127.22353373187
5√n 48.267406438316

Divisors of 261981013

1, 7, 73, 511, 512683, 3588781, 37425859, 261981013

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 -261981012
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 261981013 can be divided by 8 positive divisors. The sum of these divisors (counting 261981013) is 1, the average is 0.125.

Base conversion 261981013

Base System Value
2 Binary 1111100111011000001101010101
3 Ternary 200020222000101111
4 Quaternary 33213120031111
5 Quinary 1014031343023
6 Senary 41555055021
8 Octal 1747301525
10 Decimal 261981013
12 Duodecimal 738a1471
16 Hexadecimal f9d8355
20 Vigesimal 41h7cad
36 Base36 4bz5ud

Cryptographic Hash Functions

md5 1bf9ed28098db731bd9dd4368a50d060
sha1 5e4a43bfc2d0cb7e7c52d846d3e6b7a296e35c37
sha256 6b67832bfdde5dc2ef59b65d271b726fe66c0a11f701a6178ba22082744c8638
sha512 58d74d75a1e20833ac1fe4b864714d7976cb105e83807034259fa61e734edcc7d14463e7c6ce004ce2ffb24d977d8eea59f38359640edf720626ac0ae3c92ba6
ripemd-160 491936e00a634565ab49aab3a28e7bd65d52099b

261981013 as geometric shapes

Circle

Radius = n
Diameter 523962026
Circumference 1646075251.6416
Area 2.1562023094965E+17

Sphere

Radius = n
Volume 7.5317875369978E+25
Surface area 8.6248092379861E+17
Circumference 1646075251.6416

Square

Length = n
Perimeter 1047924052
Area 68634051172506169
Diagonal 370497101.66884

Cube

Length = n
Surface area 411804307035037014
Volume 1.7980818252467E+25
Space diagonal 453764425.13436

Equilateral Triangle

Length = n
Perimeter 785943039
Area 2.9719415940016E+16
Altitude 226882212.56718

Triangular Pyramid

Length = n
Surface area 2.9719415940016E+16
Volume 2.1190597529337E+24
Height 123499033.88961