21031751 (number)

21031751 is an odd 8-digits composite number following 21031750 and preceding 21031752. In scientific notation, it is written as 2.1031751 × 10^7. The sum of its digits is 20. It has a total of 2 prime factors and 4 positive divisors. There are 19413912 positive integers (up to 21031751) that are relatively prime to 21031751.

Interesting facts

Basic properties

Name

Name twenty-one million thirty-one thousand seven hundred fifty-one

Notation

Scientific notation 2.1031751 × 10^7
Engineering notation 2.1031751 × 10^6

Prime Factorization of 21031751

Prime Factorization 13 × 1617827

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 21031751
Product of the distinct prime numbers

The prime factorization of 21031751 is 13 × 1617827. Since it has a total of 2 prime factors.

Most popular turbo-numbers

10, 10, 39, 39, 793, 368, 6841, 7788, 9522, 31727, 316997, 645510, 2038128, 2531286, 34752719, 98227087, 839180087, 723542620, 201873436, 4544955760

Basic calculations (n = 21031751)

Multiplication

n×y
n×2 42063502
n×3 63095253
n×4 84127004
n×5 105158755

Division

n÷y
n÷2 10515875.5
n÷3 7010583.6666667
n÷3 5257937.75
n÷5 4206350.2

Exponentiation

ny
n2 442334550126001
n3 9.3030701169471E+21
n4 1.9565985423517E+29
n5 4.1150693349704E+36

Nth Root

y√n
2√n 4586.0387045903
3√n 276.03139301949
4√n 67.720297581968
5√n 29.145739993552

Divisors of 21031751

1, 13, 1617827, 21031751

4 divisors

τ Total Divisors 4
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21031750
Sum of the proper positive divisors of n
A Arithmetic Mean 0.25
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 4
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21031751 can be divided by 4 positive divisors. The sum of these divisors (counting 21031751) is 1, the average is 0.25.

Base conversion 21031751

Base System Value
2 Binary 1010000001110101101000111
3 Ternary 1110120112010202
4 Quaternary 1100032231013
5 Quinary 20341004001
6 Senary 2030441115
8 Octal 120165507
10 Decimal 21031751
12 Duodecimal 706319b
16 Hexadecimal 140eb47
20 Vigesimal 6b8j7b
36 Base36 cis7b

Cryptographic Hash Functions

md5 523c912b56651eae8d4c8f64f7a8dd52
sha1 0a869d0d9397611bb815586b750af587f6e4dc88
sha256 a4e597d0cf896020345a3a352ddc958bfc7144d99da6b2d309632f861eba0c34
sha512 eec39181d0978333dab3f656749da796de3f01ed31185ba29ce5836a15b48dc702a198e3e2eb81d9fd68ed7f4851aaf54e60b1f36395d5a2a4060b2020055b9d
ripemd-160 a5bf7ac29e35351d538d35a3739d2fe20db1b1b9

21031751 as geometric shapes

Circle

Radius = n
Diameter 42063502
Circumference 132146388.86746
Area 1.3896349731048E+15

Sphere

Radius = n
Volume 3.8968608980309E+22
Surface area 5.5585398924192E+15
Circumference 132146388.86746

Square

Length = n
Perimeter 84127004
Area 442334550126001
Diagonal 29743387.504654

Cube

Length = n
Surface area 2654007300756006
Volume 9.3030701169471E+21
Space diagonal 36428061.304138

Equilateral Triangle

Length = n
Perimeter 63095253
Area 1.9153647869034E+14
Altitude 18214030.652069

Triangular Pyramid

Length = n
Surface area 1.9153647869034E+14
Volume 1.0963773275912E+21
Height 9914462.5015513