21085904 (number)

21085904 is an even 8-digits composite number following 21085903 and preceding 21085905. In scientific notation, it is written as 2.1085904 × 10^7. The sum of its digits is 29. It has a total of 7 prime factors and 40 positive divisors. There are 8909568 positive integers (up to 21085904) that are relatively prime to 21085904.

Interesting facts

Basic properties

Name

Name twenty-one million eighty-five thousand nine hundred four

Notation

Scientific notation 2.1085904 × 10^7
Engineering notation 2.1085904 × 10^6

Prime Factorization of 21085904

Prime Factorization 2 × 2 × 2 × 2 × 7 × 73 × 2579

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 7
Total number of prime factors
rad Radical 2635738
Product of the distinct prime numbers

The prime factorization of 21085904 is 2 × 2 × 2 × 2 × 7 × 73 × 2579. Since it has a total of 7 prime factors.

Most popular turbo-numbers

10, 7, 83, 38, 902, 714, 9511, 1184, 55801, 59706, 172478, 158509, 3775347, 4956200, 69554690, 45103303, 549512535, 326289195, 3714150216, 3882526984

Basic calculations (n = 21085904)

Multiplication

n×y
n×2 42171808
n×3 63257712
n×4 84343616
n×5 105429520

Division

n÷y
n÷2 10542952
n÷3 7028634.6666667
n÷3 5271476
n÷5 4217180.8

Exponentiation

ny
n2 444615347497216
n3 9.3751165342529E+21
n4 1.9768280723007E+29
n5 4.1683206957038E+36

Nth Root

y√n
2√n 4591.9390239854
3√n 276.26810047721
4√n 67.763847470354
5√n 29.160733573482

Divisors of 21085904

1, 2, 4, 7, 8, 14, 16, 28, 56, 73, 112, 146, 292, 511, 584, 1022, 1168, 2044, 2579, 4088, 5158, 8176, 10316, 18053, 20632, 36106, 41264, 72212, 144424, 188267, 288848, 376534, 753068, 1317869, 1506136, 2635738, 3012272, 5271476, 10542952, 21085904

40 divisors

τ Total Divisors 40
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21085903
Sum of the proper positive divisors of n
A Arithmetic Mean 0.025
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 40
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21085904 can be divided by 40 positive divisors. The sum of these divisors (counting 21085904) is 1, the average is 0.025.

Base conversion 21085904

Base System Value
2 Binary 1010000011011111011010000
3 Ternary 1110200021102102
4 Quaternary 1100123323100
5 Quinary 20344222104
6 Senary 2031535532
8 Octal 120337320
10 Decimal 21085904
12 Duodecimal 708a5a8
16 Hexadecimal 141bed0
20 Vigesimal 6bfef4
36 Base36 cjxzk

Cryptographic Hash Functions

md5 7a3ab25324089972954e45c316f10923
sha1 033cf53a9e61db702963feb0b684a98f63b0d370
sha256 3307517c499f61fc4de5d6e134744dd59585655d0de1327b42bd4a313378b3d0
sha512 cd5e1492bf2a9db8dfe47d4115ebaefeacd4f9bfb33106719fe12b424a133258028c78f5e6e9c05df6390282e4c0315fd0bdc09619f7914420e33878d9de39f0
ripemd-160 d7513e37bd18f13151637e3df075ba81eeb174c4

21085904 as geometric shapes

Circle

Radius = n
Diameter 42171808
Circumference 132486642.2014
Area 1.3968003093705E+15

Sphere

Radius = n
Volume 3.927039630741E+22
Surface area 5.5872012374821E+15
Circumference 132486642.2014

Square

Length = n
Perimeter 84343616
Area 444615347497216
Diagonal 29819971.411697

Cube

Length = n
Surface area 2667692084983296
Volume 9.3751165342529E+21
Space diagonal 36521857.05152

Equilateral Triangle

Length = n
Perimeter 63257712
Area 1.9252409292252E+14
Altitude 18260928.52576

Triangular Pyramid

Length = n
Surface area 1.9252409292252E+14
Volume 1.1048680792974E+21
Height 9939990.4705657