20821808 (number)

20821808 is an even 8-digits composite number following 20821807 and preceding 20821809. In scientific notation, it is written as 2.0821808 × 10^7. The sum of its digits is 29. It has a total of 7 prime factors and 40 positive divisors. There are 8329728 positive integers (up to 20821808) that are relatively prime to 20821808.

Interesting facts

Basic properties

Name

Name twenty million eight hundred twenty-one thousand eight hundred eight

Notation

Scientific notation 2.0821808 × 10^7
Engineering notation 2.0821808 × 10^6

Prime Factorization of 20821808

Prime Factorization 2 × 2 × 2 × 2 × 959 × 23 × 59

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 7
Total number of prime factors
rad Radical 2602726
Product of the distinct prime numbers

The prime factorization of 20821808 is 2 × 2 × 2 × 2 × 959 × 23 × 59. Since it has a total of 7 prime factors.

Most popular turbo-numbers

4, 3, 67, 20, 632, 596, 8502, 2748, 98749, 51028, 596151, 738062, 7792088, 9388362, 33360407, 88696310, 307906742, 890002955, 7898319620, 99095009

Basic calculations (n = 20821808)

Multiplication

n×y
n×2 41643616
n×3 62465424
n×4 83287232
n×5 104109040

Division

n÷y
n÷2 10410904
n÷3 6940602.6666667
n÷3 5205452
n÷5 4164361.6

Exponentiation

ny
n2 433547688388864
n3 9.0272467264768E+21
n4 1.8796359810733E+29
n5 3.9137419507799E+36

Nth Root

y√n
2√n 4563.0919342043
3√n 275.10985363183
4√n 67.550661981984
5√n 29.087318574941

Divisors of 20821808

1, 2, 4, 8, 16, 23, 46, 59, 92, 118, 184, 236, 368, 472, 944, 959, 1357, 1918, 2714, 3836, 5428, 7672, 10856, 15344, 21712, 22057, 44114, 56581, 88228, 113162, 176456, 226324, 352912, 452648, 905296, 1301363, 2602726, 5205452, 10410904, 20821808

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 -20821807
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 20821808 can be divided by 40 positive divisors. The sum of these divisors (counting 20821808) is 1, the average is 0.025.

Base conversion 20821808

Base System Value
2 Binary 1001111011011011100110000
3 Ternary 1110011212011002
4 Quaternary 1033123130300
5 Quinary 20312244213
6 Senary 2022141132
8 Octal 117333460
10 Decimal 20821808
12 Duodecimal 6b817a8
16 Hexadecimal 13db730
20 Vigesimal 6a2ea8
36 Base36 cea7k

Cryptographic Hash Functions

md5 d4856e5b115dbc3d9724be51dd56f047
sha1 9e7702c51aa880fbf959f53e5cfb1851b2e0f906
sha256 7df44055b00cc01a0e3f0f26cff12e1be555e8a765c531a32858d207fa2d0b70
sha512 b6a9669d2102055710c6e1f3263d5dd28dbf8134cb0faaa6e6ece75f7f8b2056e6c94cc58deb2fdba89d8d0015d492b7b9cd96f829d5b33358db07769a957d96
ripemd-160 18535ba2f5f1bee47fc60e2beaeb352162ddfd4e

20821808 as geometric shapes

Circle

Radius = n
Diameter 41643616
Circumference 130827278.09451
Area 1.3620302328233E+15

Sphere

Radius = n
Volume 3.7813242664056E+22
Surface area 5.4481209312932E+15
Circumference 130827278.09451

Square

Length = n
Perimeter 83287232
Area 433547688388864
Diagonal 29446483.266729

Cube

Length = n
Surface area 2601286130333184
Volume 9.0272467264768E+21
Space diagonal 36064429.361444

Equilateral Triangle

Length = n
Perimeter 62465424
Area 1.8773165594839E+14
Altitude 18032214.680722

Triangular Pyramid

Length = n
Surface area 1.8773165594839E+14
Volume 1.0638712292893E+21
Height 9815494.4222429