261366981 (number)

261366981 is an odd 9-digits composite number following 261366980 and preceding 261366982. In scientific notation, it is written as 2.61366981 × 10^8. The sum of its digits is 42. It has a total of 3 prime factors and 8 positive divisors. There are 174205680 positive integers (up to 261366981) that are relatively prime to 261366981.

Interesting facts

Basic properties

Name

Name two hundred sixty-one million three hundred sixty-six thousand nine hundred eighty-one

Notation

Scientific notation 2.61366981 × 10^8
Engineering notation 2.61366981 × 10^6

Prime Factorization of 261366981

Prime Factorization 3 × 6947 × 12541

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 261366981
Product of the distinct prime numbers

The prime factorization of 261366981 is 3 × 6947 × 12541. Since it has a total of 3 prime factors.

Most popular turbo-numbers

7, 3, 69, 14, 101, 55, 6646, 1586, 58021, 91935, 877149, 725388, 215309, 7990763, 15656015, 19693056, 20382688, 87504976, 5653492156, 8867846905

Basic calculations (n = 261366981)

Multiplication

n×y
n×2 522733962
n×3 784100943
n×4 1045467924
n×5 1306834905

Division

n÷y
n÷2 130683490.5
n÷3 87122327
n÷3 65341745.25
n÷5 52273396.2

Exponentiation

ny
n2 68312698757054361
n3 1.7854683838094E+25
n4 4.6666248114721E+33
n5 1.2197016384341E+42

Nth Root

y√n
2√n 16166.848208603
3√n 639.3670345171
4√n 127.14892138199
5√n 48.244759333537

Divisors of 261366981

1, 3, 6947, 12541, 20841, 37623, 87122327, 261366981

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 -261366980
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 261366981 can be divided by 8 positive divisors. The sum of these divisors (counting 261366981) is 1, the average is 0.125.

Base conversion 261366981

Base System Value
2 Binary 1111100101000010010011000101
3 Ternary 200012210211002120
4 Quaternary 33211002103011
5 Quinary 1013402220411
6 Senary 41534000153
8 Octal 1745022305
10 Decimal 261366981
12 Duodecimal 73646059
16 Hexadecimal f9424c5
20 Vigesimal 41dah91
36 Base36 4bm01x

Cryptographic Hash Functions

md5 4a62f5bb8432cde981573ac8fd0f26f3
sha1 8f428aba6d2dd9ee95998e23799a5aaf415159ae
sha256 4abe39b717736f8b8e3c6ac2317d42349f7503ed2dbaffa6c5f0ac13ed76eeae
sha512 52e1ee02d015421c765cd7db00ab4f0d44a3e85e18df740cd39598a09d524e5e75d99a79d97c0444aed2652335485c8bae703dad0e749264ea0b5cc4406f30da
ripemd-160 27783184f5250ea7cc9dbff5e6f5b2fe3eedeb69

261366981 as geometric shapes

Circle

Radius = n
Diameter 522733962
Circumference 1642217174.8011
Area 2.1461067256205E+17

Sphere

Radius = n
Volume 7.4789524770565E+25
Surface area 8.5844269024822E+17
Circumference 1642217174.8011

Square

Length = n
Perimeter 1045467924
Area 68312698757054361
Diagonal 369628729.28671

Cube

Length = n
Surface area 409876192542326166
Volume 1.7854683838094E+25
Space diagonal 452700890.51289

Equilateral Triangle

Length = n
Perimeter 784100943
Area 2.9580266262341E+16
Altitude 226350445.25644

Triangular Pyramid

Length = n
Surface area 2.9580266262341E+16
Volume 2.104194669643E+24
Height 123209576.4289