21491860 (number)

21491860 is an even 8-digits composite number following 21491859 and preceding 21491861. In scientific notation, it is written as 2.1491860 × 10^7. The sum of its digits is 31. It has a total of 6 prime factors and 48 positive divisors. There are 7862400 positive integers (up to 21491860) that are relatively prime to 21491860.

Interesting facts

Basic properties

Name

Name twenty-one million four hundred ninety-one thousand eight hundred sixty

Notation

Scientific notation 2.1491860 × 10^7
Engineering notation 2.1491860 × 10^6

Prime Factorization of 21491860

Prime Factorization 2 × 2 × 131 × 5 × 13 × 631

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 6
Total number of prime factors
rad Radical 10745930
Product of the distinct prime numbers

The prime factorization of 21491860 is 2 × 2 × 131 × 5 × 13 × 631. Since it has a total of 6 prime factors.

Most popular turbo-numbers

Basic calculations (n = 21491860)

Multiplication

n×y
n×2 42983720
n×3 64475580
n×4 85967440
n×5 107459300

Division

n÷y
n÷2 10745930
n÷3 7163953.3333333
n÷3 5372965
n÷5 4298372

Exponentiation

ny
n2 461900046259600
n3 9.9270911282048E+21
n4 2.1335165273462E+29
n5 4.5853238513411E+36

Nth Root

y√n
2√n 4635.9314058774
3√n 278.02979167642
4√n 68.087674404971
5√n 29.272162039547

Divisors of 21491860

48 divisors

τ Total Divisors 48
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21491859
Sum of the proper positive divisors of n
A Arithmetic Mean 0.020833333333333
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 48
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21491860 can be divided by 48 positive divisors. The sum of these divisors (counting 21491860) is 1, the average is 0.020833333333333.

Base conversion 21491860

Base System Value
2 Binary 1010001111111000010010100
3 Ternary 1111102220021211
4 Quaternary 1101333002110
5 Quinary 21000214420
6 Senary 2044351204
8 Octal 121770224
10 Decimal 21491860
12 Duodecimal 7245504
16 Hexadecimal 147f094
20 Vigesimal 6e69d0
36 Base36 csn84

Cryptographic Hash Functions

md5 aacb064b9146e5c4a6adf1cc3cbff38e
sha1 91dfdd5c803828cda6741d5412fec8e8c9ad5016
sha256 2e8889a81704f4df9b11b5333b47496a4631d77df64e170ce84d28725200ec66
sha512 d125c5a90d4361301a9e39e93df5b0d22224cb973f5b39b5f142bf6ea7cb125a9988387430e578acff4989bcc2f8e1d2d48d52387cae69c65a75a62f8982ade5
ripemd-160 a2ef0d002f462ef938b0fe81ec613f8fd3d37a81

21491860 as geometric shapes

Circle

Radius = n
Diameter 42983720
Circumference 135037338.97596
Area 1.4511017920219E+15

Sphere

Radius = n
Volume 4.1582502079846E+22
Surface area 5.8044071680878E+15
Circumference 135037338.97596

Square

Length = n
Perimeter 85967440
Area 461900046259600
Diagonal 30394079.892624

Cube

Length = n
Surface area 2771400277557600
Volume 9.9270911282048E+21
Space diagonal 37224993.469157

Equilateral Triangle

Length = n
Perimeter 64475580
Area 2.0000858703501E+14
Altitude 18612496.734579

Triangular Pyramid

Length = n
Surface area 2.0000858703501E+14
Volume 1.1699189090351E+21
Height 10131359.964208