21487923 (number)

21487923 is an odd 8-digits composite number following 21487922 and preceding 21487924. In scientific notation, it is written as 2.1487923 × 10^7. The sum of its digits is 36. It has a total of 5 prime factors and 20 positive divisors. There are 14262480 positive integers (up to 21487923) that are relatively prime to 21487923.

Interesting facts

Basic properties

Name

Name twenty-one million four hundred eighty-seven thousand nine hundred twenty-three

Notation

Scientific notation 2.1487923 × 10^7
Engineering notation 2.1487923 × 10^6

Prime Factorization of 21487923

Prime Factorization 3 × 9 × 3 × 311 × 853

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 7162641
Product of the distinct prime numbers

The prime factorization of 21487923 is 3 × 9 × 3 × 311 × 853. Since it has a total of 5 prime factors.

Most popular turbo-numbers

6, 4, 8, 39, 485, 205, 9379, 9549, 82840, 42106, 615742, 904771, 5955001, 7346784, 5076733, 60702308, 260680761, 841318558, 8643844947, 318143320

Basic calculations (n = 21487923)

Multiplication

n×y
n×2 42975846
n×3 64463769
n×4 85951692
n×5 107439615

Division

n÷y
n÷2 10743961.5
n÷3 7162641
n÷3 5371980.75
n÷5 4297584.6

Exponentiation

ny
n2 461730834853929
n3 9.9216366260669E+21
n4 2.1319536385491E+29
n5 4.5811255624712E+36

Nth Root

y√n
2√n 4635.5067684127
3√n 278.01281361845
4√n 68.084556019796
5√n 29.271089513043

Divisors of 21487923

1, 3, 9, 27, 81, 311, 853, 933, 2559, 2799, 7677, 8397, 23031, 25191, 69093, 265283, 795849, 2387547, 7162641, 21487923

20 divisors

τ Total Divisors 20
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21487922
Sum of the proper positive divisors of n
A Arithmetic Mean 0.05
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 20
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21487923 can be divided by 20 positive divisors. The sum of these divisors (counting 21487923) is 1, the average is 0.05.

Base conversion 21487923

Base System Value
2 Binary 1010001111110000100110011
3 Ternary 1111102200220000
4 Quaternary 1101332010303
5 Quinary 21000103143
6 Senary 2044321043
8 Octal 121760463
10 Decimal 21487923
12 Duodecimal 7243183
16 Hexadecimal 147e133
20 Vigesimal 6e5jg3
36 Base36 csk6r

Cryptographic Hash Functions

md5 8c8f53d445d029701070c266d61a2811
sha1 326c257df09795b0cdd85d125e4dd2b9dec9e4d4
sha256 419f26390031f958cb056c41017c0366cf897bb0027b787e2b557568d06e280a
sha512 43b32e2687973522b6ef7884957244097bdd139d47cbe9fdf7f5eeb40c40a8338f339d629d511120bd4678fed865d19e0104c95d55dee50ccff06d5b14bd60c6
ripemd-160 4bf47949b1e6c2c38cca3aca67f081a40412ef5b

21487923 as geometric shapes

Circle

Radius = n
Diameter 42975846
Circumference 135012602.07541
Area 1.450570198713E+15

Sphere

Radius = n
Volume 4.1559654314719E+22
Surface area 5.8022807948519E+15
Circumference 135012602.07541

Square

Length = n
Perimeter 85951692
Area 461730834853929
Diagonal 30388512.133829

Cube

Length = n
Surface area 2770385009123574
Volume 9.9216366260669E+21
Space diagonal 37218174.385128

Equilateral Triangle

Length = n
Perimeter 64463769
Area 1.9993531634705E+14
Altitude 18609087.192564

Triangular Pyramid

Length = n
Surface area 1.9993531634705E+14
Volume 1.1692760897935E+21
Height 10129504.04461