21000391 (number)

21000391 is an odd 8-digits prime number following 21000390 and preceding 21000392. In scientific notation, it is written as 2.1000391 × 10^7. The sum of its digits is 16. It has a total of 1 prime factors and 2 positive divisors. There are 21000390 positive integers (up to 21000391) that are relatively prime to 21000391.

Interesting facts

Basic properties

Name

Name twenty-one million three hundred ninety-one

Notation

Scientific notation 2.1000391 × 10^7
Engineering notation 2.1000391 × 10^6

Prime Factorization of 21000391

Prime Factorization 21000391

Composite number
ω Distinct Factors 1
Total number of distinct prime factors
Ω Total Factors 1
Total number of prime factors
rad Radical 21000391
Product of the distinct prime numbers

The prime factorization of 21000391 is 21000391. Since it has a total of 1 prime factors.

Most popular turbo-numbers

2, 8, 51, 54, 852, 790, 1162, 3460, 98193, 75030, 655471, 520078, 4605466, 9006966, 35182284, 20135770, 589791458, 30658720, 1653573634, 7470169091

Basic calculations (n = 21000391)

Multiplication

n×y
n×2 42000782
n×3 63001173
n×4 84001564
n×5 105001955

Division

n÷y
n÷2 10500195.5
n÷3 7000130.3333333
n÷3 5250097.75
n÷5 4200078.2

Exponentiation

ny
n2 441016422152881
n3 9.2615173026316E+21
n4 1.9449548460853E+29
n5 4.0844812245136E+36

Nth Root

y√n
2√n 4582.6183563548
3√n 275.89412991217
4√n 67.695039377748
5√n 29.137043085348

Divisors of 21000391

1, 21000391

2 divisors

τ Total Divisors 2
Total number of the positive divisors of n
σ Sum of Divisors 21000392
Sum of all the positive divisors of n
s Aliquot Sum 1
Sum of the proper positive divisors of n
A Arithmetic Mean 10500196
Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G Geometric Mean 4582.6184654627
Returns the nth root of the product of n divisors
H Harmonic Mean 1.9999999047637
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21000391 can be divided by 2 positive divisors. The sum of these divisors (counting 21000391) is 21000392, the average is 10500196.

Base conversion 21000391

Base System Value
2 Binary 1010000000111000011000111
3 Ternary 1110111221010021
4 Quaternary 1100013003013
5 Quinary 20334003031
6 Senary 2030040011
8 Octal 120070307
10 Decimal 21000391
12 Duodecimal 7049007
16 Hexadecimal 14070c7
20 Vigesimal 6b50jb
36 Base36 ci407

Cryptographic Hash Functions

md5 7fdfe6114267c1efad09212c350163e0
sha1 74a40bf076d75c2bcdd683c752188cb3af79ee0b
sha256 5fbbbbbd8b0ead55957fdac3181409bfdab46e49328506f03d39cb4dde06babb
sha512 ab01e969892e2dbeb9bdb97e9de23b0ec210318f7691244cb115117dba7f53b64c43721e13305a8f6b7b0afb73c6f90f622696a9dde3739d85746a002204f2e9
ripemd-160 7a5ad7c4b0e0d2d17e43127fd53f98c912cd9e59

21000391 as geometric shapes

Circle

Radius = n
Diameter 42000782
Circumference 131949348.17623
Area 1.3854939519479E+15

Sphere

Radius = n
Volume 3.8794552958723E+22
Surface area 5.5419758077918E+15
Circumference 131949348.17623

Square

Length = n
Perimeter 84001564
Area 441016422152881
Diagonal 29699037.767338

Cube

Length = n
Surface area 2646098532917286
Volume 9.2615173026316E+21
Space diagonal 36373744.190812

Equilateral Triangle

Length = n
Perimeter 63001173
Area 1.9096571253526E+14
Altitude 18186872.095406

Triangular Pyramid

Length = n
Surface area 1.9096571253526E+14
Volume 1.0914802814612E+21
Height 9899679.2557793