21491857 (number)

21491857 is an odd 8-digits composite number following 21491856 and preceding 21491858. In scientific notation, it is written as 2.1491857 × 10^7. The sum of its digits is 37. It has a total of 4 prime factors and 12 positive divisors. There are 20435328 positive integers (up to 21491857) that are relatively prime to 21491857.

Interesting facts

Basic properties

Name

Name twenty-one million four hundred ninety-one thousand eight hundred fifty-seven

Notation

Scientific notation 2.1491857 × 10^7
Engineering notation 2.1491857 × 10^6

Prime Factorization of 21491857

Prime Factorization 109 × 73 × 37 × 73

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 294409
Product of the distinct prime numbers

The prime factorization of 21491857 is 109 × 73 × 37 × 73. Since it has a total of 4 prime factors.

Most popular turbo-numbers

4, 4, 80, 59, 528, 798, 6470, 30, 24331, 7939, 547051, 829974, 2277261, 4623204, 92281801, 38735842, 110819489, 163503864, 6313864559, 8440826078

Basic calculations (n = 21491857)

Multiplication

n×y
n×2 42983714
n×3 64475571
n×4 85967428
n×5 107459285

Division

n÷y
n÷2 10745928.5
n÷3 7163952.3333333
n÷3 5372964.25
n÷5 4298371.4

Exponentiation

ny
n2 461899917308449
n3 9.927086971105E+21
n4 2.1335153360955E+29
n5 4.5853206510672E+36

Nth Root

y√n
2√n 4635.9310823178
3√n 278.02977873991
4√n 68.08767202892
5√n 29.27216122234

Divisors of 21491857

1, 37, 73, 109, 2701, 4033, 5329, 7957, 197173, 294409, 580861, 21491857

12 divisors

τ Total Divisors 12
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21491856
Sum of the proper positive divisors of n
A Arithmetic Mean 0.083333333333333
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 12
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21491857 can be divided by 12 positive divisors. The sum of these divisors (counting 21491857) is 1, the average is 0.083333333333333.

Base conversion 21491857

Base System Value
2 Binary 1010001111111000010010001
3 Ternary 1111102220021201
4 Quaternary 1101333002101
5 Quinary 21000214412
6 Senary 2044351201
8 Octal 121770221
10 Decimal 21491857
12 Duodecimal 7245501
16 Hexadecimal 147f091
20 Vigesimal 6e69ch
36 Base36 csn81

Cryptographic Hash Functions

md5 b15172ac4f707992908a0ff0e428c45a
sha1 a49580f49c68190a443bd6a6775d2ccb674c646e
sha256 217b91e05126efe43d2fc679a890eb670bbcf76453eb7ea614299b23a3d78a5a
sha512 0cea8db18e381877b2653504c9f3fddc49afeddfd276bc825fd52dc9c22982aaa366c4206bf03f9cdd45967cbd9e77d8c2263400f589def20435edd01a6f796d
ripemd-160 515589bce26245898194d404490cdfd23e02cbab

21491857 as geometric shapes

Circle

Radius = n
Diameter 42983714
Circumference 135037320.1264
Area 1.45110138691E+15

Sphere

Radius = n
Volume 4.1582484666627E+22
Surface area 5.8044055476398E+15
Circumference 135037320.1264

Square

Length = n
Perimeter 85967428
Area 461899917308449
Diagonal 30394075.649983

Cube

Length = n
Surface area 2771399503850694
Volume 9.927086971105E+21
Space diagonal 37224988.273005

Equilateral Triangle

Length = n
Perimeter 64475571
Area 2.0000853119752E+14
Altitude 18612494.136502

Triangular Pyramid

Length = n
Surface area 2.0000853119752E+14
Volume 1.1699184191162E+21
Height 10131358.549994