261398981 (number)

261398981 is an odd 9-digits prime number following 261398980 and preceding 261398982. In scientific notation, it is written as 2.61398981 × 10^8. The sum of its digits is 47. It has a total of 1 prime factors and 2 positive divisors. There are 261398980 positive integers (up to 261398981) that are relatively prime to 261398981.

Interesting facts

Basic properties

Name

Name two hundred sixty-one million three hundred ninety-eight thousand nine hundred eighty-one

Notation

Scientific notation 2.61398981 × 10^8
Engineering notation 2.61398981 × 10^6

Prime Factorization of 261398981

Prime Factorization 261398981

Composite number
ω Distinct Factors 1
Total number of distinct prime factors
Ω Total Factors 1
Total number of prime factors
rad Radical 261398981
Product of the distinct prime numbers

The prime factorization of 261398981 is 261398981. Since it has a total of 1 prime factors.

Most popular turbo-numbers

10, 1, 20, 72, 953, 804, 9274, 4563, 77937, 20986, 20750, 601904, 806843, 2616301, 92835944, 40109612, 972279264, 30749560, 1362701396, 3254056202

Basic calculations (n = 261398981)

Multiplication

n×y
n×2 522797962
n×3 784196943
n×4 1045595924
n×5 1306994905

Division

n÷y
n÷2 130699490.5
n÷3 87132993.666667
n÷3 65349745.25
n÷5 52279796.2

Exponentiation

ny
n2 68329427267838361
n3 1.7861242660127E+25
n4 4.6689106307508E+33
n5 1.2204484812583E+42

Nth Root

y√n
2√n 16167.83785792
3√n 639.39312670633
4√n 127.15281301615
5√n 48.245940627893

Divisors of 261398981

1, 261398981

2 divisors

τ Total Divisors 2
Total number of the positive divisors of n
σ Sum of Divisors 261398982
Sum of all the positive divisors of n
s Aliquot Sum 1
Sum of the proper positive divisors of n
A Arithmetic Mean 130699491
Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G Geometric Mean 16167.837888846
Returns the nth root of the product of n divisors
H Harmonic Mean 1.9999999923489
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 261398981 can be divided by 2 positive divisors. The sum of these divisors (counting 261398981) is 261398982, the average is 130699491.

Base conversion 261398981

Base System Value
2 Binary 1111100101001010000111000101
3 Ternary 200012212102222202
4 Quaternary 33211022013011
5 Quinary 1013404231411
6 Senary 41534404245
8 Octal 1745120705
10 Decimal 261398981
12 Duodecimal 73660685
16 Hexadecimal f94a1c5
20 Vigesimal 41deh91
36 Base36 4bmoqt

Cryptographic Hash Functions

md5 289f50b33026037bc6f439289ab8d988
sha1 1dcf4afdd2135f60361d3fbdbbcde84dab6c9bd8
sha256 ad19cee58141eb7b6d9aecd73131e48b511fb56e80725ae8ced50608e342d048
sha512 65d9aaa12311ee63dd80c4f327d5ceadd8f7f8d18e8bf29b79580116c2614e9b076345450559b98ac19200fe6314f64f1711b165fd7df228afd5d7cdf202e0cb
ripemd-160 7504854407c34c725069b727caa23d6458393264

261398981 as geometric shapes

Circle

Radius = n
Diameter 522797962
Circumference 1642418236.7309
Area 2.1466322672864E+17

Sphere

Radius = n
Volume 7.4816998300051E+25
Surface area 8.5865290691456E+17
Circumference 1642418236.7309

Square

Length = n
Perimeter 1045595924
Area 68329427267838361
Diagonal 369673984.12071

Cube

Length = n
Surface area 409976563607030166
Volume 1.7861242660127E+25
Space diagonal 452756316.13873

Equilateral Triangle

Length = n
Perimeter 784196943
Area 2.9587509919995E+16
Altitude 226378158.06937

Triangular Pyramid

Length = n
Surface area 2.9587509919995E+16
Volume 2.1049676342323E+24
Height 123224661.37357