21491923 (number)

21491923 is an odd 8-digits prime number following 21491922 and preceding 21491924. In scientific notation, it is written as 2.1491923 × 10^7. The sum of its digits is 31. It has a total of 1 prime factors and 2 positive divisors. There are 21491922 positive integers (up to 21491923) that are relatively prime to 21491923.

Interesting facts

Basic properties

Name

Name twenty-one million four hundred ninety-one thousand nine hundred twenty-three

Notation

Scientific notation 2.1491923 × 10^7
Engineering notation 2.1491923 × 10^6

Prime Factorization of 21491923

Prime Factorization 21491923

Composite number
ω Distinct Factors 1
Total number of distinct prime factors
Ω Total Factors 1
Total number of prime factors
rad Radical 21491923
Product of the distinct prime numbers

The prime factorization of 21491923 is 21491923. Since it has a total of 1 prime factors.

Most popular turbo-numbers

10, 7, 2, 87, 948, 166, 9748, 1144, 99465, 37444, 807412, 274523, 4934953, 1542009, 41337621, 11979005, 723851818, 95872979, 306994249, 5479038351

Basic calculations (n = 21491923)

Multiplication

n×y
n×2 42983846
n×3 64475769
n×4 85967692
n×5 107459615

Division

n÷y
n÷2 10745961.5
n÷3 7163974.3333333
n÷3 5372980.75
n÷5 4298384.6

Exponentiation

ny
n2 461902754237929
n3 9.9271784275695E+21
n4 2.1335415437258E+29
n5 4.5853910575057E+36

Nth Root

y√n
2√n 4635.9382006235
3√n 278.03006334299
4√n 68.087724301988
5√n 29.272179200872

Divisors of 21491923

1, 21491923

2 divisors

τ Total Divisors 2
Total number of the positive divisors of n
σ Sum of Divisors 21491924
Sum of all the positive divisors of n
s Aliquot Sum 1
Sum of the proper positive divisors of n
A Arithmetic Mean 10745962
Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G Geometric Mean 4635.9383084765
Returns the nth root of the product of n divisors
H Harmonic Mean 1.9999999069418
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21491923 can be divided by 2 positive divisors. The sum of these divisors (counting 21491923) is 21491924, the average is 10745962.

Base conversion 21491923

Base System Value
2 Binary 1010001111111000011010011
3 Ternary 1111102220101011
4 Quaternary 1101333003103
5 Quinary 21000220143
6 Senary 2044351351
8 Octal 121770323
10 Decimal 21491923
12 Duodecimal 7245557
16 Hexadecimal 147f0d3
20 Vigesimal 6e69g3
36 Base36 csn9v

Cryptographic Hash Functions

md5 b556faf8e212f52557941f1924ab2872
sha1 c69ca717378dea653300a4f51fe81ea3af41a7f5
sha256 645a5e9ba109b79288a5299692addf281c9c3b41f40013b86a394477ee569556
sha512 3d9fdc802cd753a54be9d94a93f5626e5e371135070505be638422dde1103f9403f1bf39317fcd8f85bdf6168a4b5c29e087010a37ecd426c54330e84f1f2465
ripemd-160 a819e81dabfc44c68846212106341e72ebc52e0b

21491923 as geometric shapes

Circle

Radius = n
Diameter 42983846
Circumference 135037734.81664
Area 1.4511102993868E+15

Sphere

Radius = n
Volume 4.158286775857E+22
Surface area 5.8044411975471E+15
Circumference 135037734.81664

Square

Length = n
Perimeter 85967692
Area 461902754237929
Diagonal 30394168.988078

Cube

Length = n
Surface area 2771416525427574
Volume 9.9271784275695E+21
Space diagonal 37225102.588358

Equilateral Triangle

Length = n
Perimeter 64475769
Area 2.0000975962402E+14
Altitude 18612551.294179

Triangular Pyramid

Length = n
Surface area 2.0000975962402E+14
Volume 1.1699291973639E+21
Height 10131389.662693