261978081 (number)

261978081 is an odd 9-digits composite number following 261978080 and preceding 261978082. In scientific notation, it is written as 2.61978081 × 10^8. The sum of its digits is 42. It has a total of 2 prime factors and 4 positive divisors. There are 174652052 positive integers (up to 261978081) that are relatively prime to 261978081.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.61978081 × 10^8
Engineering notation 2.61978081 × 10^6

Prime Factorization of 261978081

Prime Factorization 3 × 87326027

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 261978081
Product of the distinct prime numbers

The prime factorization of 261978081 is 3 × 87326027. Since it has a total of 2 prime factors.

Most popular turbo-numbers

3, 7, 60, 77, 384, 935, 8346, 5538, 76152, 8005, 144492, 175670, 722585, 5274654, 4940548, 89724742, 964268780, 804792660, 4018634174, 7994483994

Basic calculations (n = 261978081)

Multiplication

n×y
n×2 523956162
n×3 785934243
n×4 1047912324
n×5 1309890405

Division

n÷y
n÷2 130989040.5
n÷3 87326027
n÷3 65494520.25
n÷5 52395616.2

Exponentiation

ny
n2 68632514924442561
n3 1.7980214554109E+25
n4 4.7104221048538E+33
n5 1.2340273437296E+42

Nth Root

y√n
2√n 16185.736961906
3√n 639.86494627491
4√n 127.22317777003
5√n 48.267298399441

Divisors of 261978081

1, 3, 87326027, 261978081

4 divisors

τ Total Divisors 4
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -261978080
Sum of the proper positive divisors of n
A Arithmetic Mean 0.25
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 4
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 261978081 can be divided by 4 positive divisors. The sum of these divisors (counting 261978081) is 1, the average is 0.25.

Base conversion 261978081

Base System Value
2 Binary 1111100111010111011111100001
3 Ternary 200020221212100220
4 Quaternary 33213113133201
5 Quinary 1014031244311
6 Senary 41555033253
8 Octal 1747273741
10 Decimal 261978081
12 Duodecimal 7389b829
16 Hexadecimal f9d77e1
20 Vigesimal 41h7541
36 Base36 4bz3kx

Cryptographic Hash Functions

md5 2c7e868683035be9d88752b7fccc2a3a
sha1 ff5ff3af9e3e805846b344871fde1e9e9f859d7c
sha256 8ac6ce4f666b2fc3134334c9fe6d4cc1e3b80be87d4ef8edfc6abe6cbd855cf7
sha512 53bdcb3c3c64f0518a41534f79573cddc0a39ff1cd953779ca898bd0542da0b152972f1b77474afc79e38e33de1e9451fdb4d55a1d2c5e39b95aa1a34d3d0496
ripemd-160 0ab101a03f3f4f0211bbcf04dddf90fcfe22db68

261978081 as geometric shapes

Circle

Radius = n
Diameter 523956162
Circumference 1646056829.3423
Area 2.1561540468402E+17

Sphere

Radius = n
Volume 7.5315346604211E+25
Surface area 8.6246161873608E+17
Circumference 1646056829.3423

Square

Length = n
Perimeter 1047912324
Area 68632514924442561
Diagonal 370492955.19468

Cube

Length = n
Surface area 411795089546655366
Volume 1.7980214554109E+25
Space diagonal 453759346.76139

Equilateral Triangle

Length = n
Perimeter 785934243
Area 2.9718750725091E+16
Altitude 226879673.3807

Triangular Pyramid

Length = n
Surface area 2.9718750725091E+16
Volume 2.1189886064E+24
Height 123497651.73156