21249940 (number)

21249940 is an even 8-digits composite number following 21249939 and preceding 21249941. In scientific notation, it is written as 2.1249940 × 10^7. The sum of its digits is 31. It has a total of 4 prime factors and 12 positive divisors. There are 8499968 positive integers (up to 21249940) that are relatively prime to 21249940.

Interesting facts

Basic properties

Name

Name twenty-one million two hundred forty-nine thousand nine hundred forty

Notation

Scientific notation 2.1249940 × 10^7
Engineering notation 2.1249940 × 10^6

Prime Factorization of 21249940

Prime Factorization 2 × 2 × 5 × 1062497

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 10624970
Product of the distinct prime numbers

The prime factorization of 21249940 is 2 × 2 × 5 × 1062497. Since it has a total of 4 prime factors.

Most popular turbo-numbers

4, 2, 9, 34, 573, 238, 6465, 5021, 24075, 55353, 832113, 521569, 9436732, 6145396, 21232707, 14701135, 284756869, 137789758, 7669264730, 1353127130

Basic calculations (n = 21249940)

Multiplication

n×y
n×2 42499880
n×3 63749820
n×4 84999760
n×5 106249700

Division

n÷y
n÷2 10624970
n÷3 7083313.3333333
n÷3 5312485
n÷5 4249988

Exponentiation

ny
n2 451559950003600
n3 9.5956218439795E+21
n4 2.0390638844725E+29
n5 4.3329985201208E+36

Nth Root

y√n
2√n 4609.7657207281
3√n 276.98265214768
4√n 67.895255509705
5√n 29.205963736158

Divisors of 21249940

1, 2, 4, 5, 10, 20, 1062497, 2124994, 4249988, 5312485, 10624970, 21249940

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 -21249939
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 21249940 can be divided by 12 positive divisors. The sum of these divisors (counting 21249940) is 1, the average is 0.083333333333333.

Base conversion 21249940

Base System Value
2 Binary 1010001000011111110010100
3 Ternary 1110222121102211
4 Quaternary 1101003332110
5 Quinary 20414444230
6 Senary 2035243204
8 Octal 121037624
10 Decimal 21249940
12 Duodecimal 7149504
16 Hexadecimal 1443f94
20 Vigesimal 6cg4h0
36 Base36 cngk4

Cryptographic Hash Functions

md5 9d631124391823465f8ad32872ceb9fb
sha1 fe63ee7a0a90249a8813a3acd24edece38ebb7da
sha256 4f17351fa64633c60ec7d6b2bd88108a6804a45cc4ac549f3cdf1749d52110b3
sha512 247663bc17fc791e58a5d8a03be02003dd865b531761cbb45d64310b1b55a0c7a7baec9b96d4e4fd5dc684f87dfc6c77a5317da83d69a31beec5a43ade279797
ripemd-160 4dcc7a83e300231d1077c8add2eccae7d07ae6a6

21249940 as geometric shapes

Circle

Radius = n
Diameter 42499880
Circumference 133517310.78645
Area 1.4186174215867E+15

Sphere

Radius = n
Volume 4.0194046788896E+22
Surface area 5.6744696863467E+15
Circumference 133517310.78645

Square

Length = n
Perimeter 84999760
Area 451559950003600
Diagonal 30051953.347615

Cube

Length = n
Surface area 2709359700021600
Volume 9.5956218439795E+21
Space diagonal 36805975.73779

Equilateral Triangle

Length = n
Perimeter 63749820
Area 1.9553119401737E+14
Altitude 18402987.868895

Triangular Pyramid

Length = n
Surface area 1.9553119401737E+14
Volume 1.1308548792633E+21
Height 10017317.782538