21249985 (number)

21249985 is an odd 8-digits composite number following 21249984 and preceding 21249986. In scientific notation, it is written as 2.1249985 × 10^7. The sum of its digits is 40. It has a total of 3 prime factors and 8 positive divisors. There are 16904304 positive integers (up to 21249985) that are relatively prime to 21249985.

Interesting facts

Basic properties

Name

Name twenty-one million two hundred forty-nine thousand nine hundred eighty-five

Notation

Scientific notation 2.1249985 × 10^7
Engineering notation 2.1249985 × 10^6

Prime Factorization of 21249985

Prime Factorization 5 × 179 × 23743

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 21249985
Product of the distinct prime numbers

The prime factorization of 21249985 is 5 × 179 × 23743. Since it has a total of 3 prime factors.

Most popular turbo-numbers

9, 5, 10, 6, 822, 312, 7534, 3916, 52025, 99982, 213766, 199171, 3705898, 3715455, 88706586, 21981008, 602674858, 423177832, 1537466844, 767601749

Basic calculations (n = 21249985)

Multiplication

n×y
n×2 42499970
n×3 63749955
n×4 84999940
n×5 106249925

Division

n÷y
n÷2 10624992.5
n÷3 7083328.3333333
n÷3 5312496.25
n÷5 4249997

Exponentiation

ny
n2 451561862500225
n3 9.5956828047018E+21
n4 2.0390811566467E+29
n5 4.3330443992525E+36

Nth Root

y√n
2√n 4609.7706016677
3√n 276.98284766526
4√n 67.895291454325
5√n 29.205976105767

Divisors of 21249985

1, 5, 179, 895, 23743, 118715, 4249997, 21249985

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 -21249984
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 21249985 can be divided by 8 positive divisors. The sum of these divisors (counting 21249985) is 1, the average is 0.125.

Base conversion 21249985

Base System Value
2 Binary 1010001000011111111000001
3 Ternary 1110222121111111
4 Quaternary 1101003333001
5 Quinary 20414444420
6 Senary 2035243321
8 Octal 121037701
10 Decimal 21249985
12 Duodecimal 7149541
16 Hexadecimal 1443fc1
20 Vigesimal 6cg4j5
36 Base36 cngld

Cryptographic Hash Functions

md5 372b1e55cb79936ab0c36e7651ed2756
sha1 774dbaa10800e9900b396c4a4120eab60c71d09c
sha256 503023d9b3152922f4d0238479b2d33b2f86c8ee9a188e2f058c030f68150024
sha512 24210ff963c5bfa3a9c4f2b3d3e250a98def41c50a1c8a875ef4c79e03f971acfff371fff09fe30da3a7de41674686cbdc56bfa157ab782b7c53c501998c36b0
ripemd-160 f72ad8f5f863bdd4bca3f452a56032807afa2c4f

21249985 as geometric shapes

Circle

Radius = n
Diameter 42499970
Circumference 133517593.52979
Area 1.418623429872E+15

Sphere

Radius = n
Volume 4.0194302140572E+22
Surface area 5.6744937194881E+15
Circumference 133517593.52979

Square

Length = n
Perimeter 84999940
Area 451561862500225
Diagonal 30052016.987225

Cube

Length = n
Surface area 2709371175001350
Volume 9.5956828047018E+21
Space diagonal 36806053.680077

Equilateral Triangle

Length = n
Perimeter 63749955
Area 1.9553202215271E+14
Altitude 18403026.840038

Triangular Pyramid

Length = n
Surface area 1.9553202215271E+14
Volume 1.1308620635533E+21
Height 10017338.995742