21397904 (number)

21397904 is an even 8-digits composite number following 21397903 and preceding 21397905. In scientific notation, it is written as 2.1397904 × 10^7. The sum of its digits is 35. It has a total of 6 prime factors and 20 positive divisors. There are 9726240 positive integers (up to 21397904) that are relatively prime to 21397904.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.1397904 × 10^7
Engineering notation 2.1397904 × 10^6

Prime Factorization of 21397904

Prime Factorization 2 × 2 × 2 × 2 × 11 × 121579

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 6
Total number of prime factors
rad Radical 2674738
Product of the distinct prime numbers

The prime factorization of 21397904 is 2 × 2 × 2 × 2 × 11 × 121579. Since it has a total of 6 prime factors.

Most popular turbo-numbers

9, 7, 38, 79, 863, 521, 1604, 223, 44483, 87084, 527005, 558447, 3584803, 6990440, 92359585, 79149683, 905624746, 735660152, 7647972427, 5090491700

Basic calculations (n = 21397904)

Multiplication

n×y
n×2 42795808
n×3 64193712
n×4 85591616
n×5 106989520

Division

n÷y
n÷2 10698952
n÷3 7132634.6666667
n÷3 5349476
n÷5 4279580.8

Exponentiation

ny
n2 457870295593216
n3 9.7974646295553E+21
n4 2.0964520758662E+29
n5 4.4859680259985E+36

Nth Root

y√n
2√n 4625.7868519853
3√n 277.62404539976
4√n 68.013137348495
5√n 29.246523334487

Divisors of 21397904

1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 121579, 243158, 486316, 972632, 1337369, 1945264, 2674738, 5349476, 10698952, 21397904

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 -21397903
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 21397904 can be divided by 20 positive divisors. The sum of these divisors (counting 21397904) is 1, the average is 0.05.

Base conversion 21397904

Base System Value
2 Binary 1010001101000000110010000
3 Ternary 1111021010101222
4 Quaternary 1101220012100
5 Quinary 20434213104
6 Senary 2042344212
8 Octal 121500620
10 Decimal 21397904
12 Duodecimal 71bb068
16 Hexadecimal 1468190
20 Vigesimal 6deef4
36 Base36 cqmq8

Cryptographic Hash Functions

md5 776344d01dbdbbfef6a560baff8a8cee
sha1 4c5b18afc4f598b7e861dafa14c8e0a5a715793b
sha256 dd8e6915df48a7f20297d3bdd948ef1d86ea85a0ea8e6e492012abcfc1ff4ccb
sha512 13b0eb8d4f78ff8d8bda0422f4edf087f87110312332c3fec523bedf0a4555409afaf0c104315c3f95f02106992030dae1d0946f9197c72d132f4c3cf533c505
ripemd-160 ad2332892f3642be335676be4989de0e38306854

21397904 as geometric shapes

Circle

Radius = n
Diameter 42795808
Circumference 134446996.01724
Area 1.4384419569326E+15

Sphere

Radius = n
Volume 4.1039523872022E+22
Surface area 5.7537678277305E+15
Circumference 134446996.01724

Square

Length = n
Perimeter 85591616
Area 457870295593216
Diagonal 30261206.043158

Cube

Length = n
Surface area 2747221773559296
Volume 9.7974646295553E+21
Space diagonal 37062256.903481

Equilateral Triangle

Length = n
Perimeter 64193712
Area 1.9826365381101E+14
Altitude 18531128.451741

Triangular Pyramid

Length = n
Surface area 1.9826365381101E+14
Volume 1.1546422796656E+21
Height 10087068.681053