261728991 (number)

261728991 is an odd 9-digits composite number following 261728990 and preceding 261728992. In scientific notation, it is written as 2.61728991 × 10^8. The sum of its digits is 45. It has a total of 3 prime factors and 8 positive divisors. There are 164222016 positive integers (up to 261728991) that are relatively prime to 261728991.

Interesting facts

Basic properties

Name

Name two hundred sixty-one million seven hundred twenty-eight thousand nine hundred ninety-one

Notation

Scientific notation 2.61728991 × 10^8
Engineering notation 2.61728991 × 10^6

Prime Factorization of 261728991

Prime Factorization 9 × 17 × 1710647

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 261728991
Product of the distinct prime numbers

The prime factorization of 261728991 is 9 × 17 × 1710647. Since it has a total of 3 prime factors.

Most popular turbo-numbers

4, 4, 90, 73, 677, 926, 7670, 1890, 91417, 62379, 773782, 608565, 262675, 7777946, 22319669, 90748376, 744320859, 338746679, 1854954454, 8588002676

Basic calculations (n = 261728991)

Multiplication

n×y
n×2 523457982
n×3 785186973
n×4 1046915964
n×5 1308644955

Division

n÷y
n÷2 130864495.5
n÷3 87242997
n÷3 65432247.75
n÷5 52345798.2

Exponentiation

ny
n2 68502064729878081
n3 1.7928976283168E+25
n4 4.6925328722564E+33
n5 1.22817189389E+42

Nth Root

y√n
2√n 16178.040394312
3√n 639.66208642763
4√n 127.19292588156
5√n 48.258116351466

Divisors of 261728991

1, 9, 17, 153, 1710647, 15395823, 29080999, 261728991

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 -261728990
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 261728991 can be divided by 8 positive divisors. The sum of these divisors (counting 261728991) is 1, the average is 0.125.

Base conversion 261728991

Base System Value
2 Binary 1111100110011010101011011111
3 Ternary 200020111012200100
4 Quaternary 33212122223133
5 Quinary 1014000311431
6 Senary 41545432143
8 Octal 1746325337
10 Decimal 261728991
12 Duodecimal 7379b653
16 Hexadecimal f99aadf
20 Vigesimal 41fg29b
36 Base36 4btrdr

Cryptographic Hash Functions

md5 705948b6fb46ef179c83998b1a857560
sha1 cea7ffb4975d5e5b2b528c0d322b3acf014a4bb8
sha256 c9a83ce4268a4d3746a8a15c6bab4a3b9f1d32b0be4c98d8a77ad603a5f1bfd7
sha512 a0b0c7bf78d1ec481e03de852e48495d3eff0848a9b94455862164a85ab2f6731ff4c4e038ca9e53bf8277d0643a6448b34a0c98435653c1232abf6da16c6ca4
ripemd-160 2bfe7c8b82290fd18297da75c968df782f4e5ad7

261728991 as geometric shapes

Circle

Radius = n
Diameter 523457982
Circumference 1644491750.7141
Area 2.1520558331112E+17

Sphere

Radius = n
Volume 7.510072023678E+25
Surface area 8.6082233324447E+17
Circumference 1644491750.7141

Square

Length = n
Perimeter 1046915964
Area 68502064729878081
Diagonal 370140688.73843

Cube

Length = n
Surface area 411012388379268486
Volume 1.7928976283168E+25
Space diagonal 453327910.22574

Equilateral Triangle

Length = n
Perimeter 785186973
Area 2.966226413388E+16
Altitude 226663955.11287

Triangular Pyramid

Length = n
Surface area 2.966226413388E+16
Volume 2.1129501182601E+24
Height 123380229.57948