21031721 (number)

21031721 is an odd 8-digits prime number following 21031720 and preceding 21031722. In scientific notation, it is written as 2.1031721 × 10^7. The sum of its digits is 17. It has a total of 1 prime factors and 2 positive divisors. There are 21031720 positive integers (up to 21031721) that are relatively prime to 21031721.

Interesting facts

Basic properties

Name

Name twenty-one million thirty-one thousand seven hundred twenty-one

Notation

Scientific notation 2.1031721 × 10^7
Engineering notation 2.1031721 × 10^6

Prime Factorization of 21031721

Prime Factorization 21031721

Composite number
ω Distinct Factors 1
Total number of distinct prime factors
Ω Total Factors 1
Total number of prime factors
rad Radical 21031721
Product of the distinct prime numbers

The prime factorization of 21031721 is 21031721. Since it has a total of 1 prime factors.

Most popular turbo-numbers

7, 9, 52, 19, 807, 535, 7548, 5670, 4372, 5227, 163088, 834767, 6526777, 9213624, 22420227, 26990661, 11277813, 192285137, 4712451482, 2541455177

Basic calculations (n = 21031721)

Multiplication

n×y
n×2 42063442
n×3 63095163
n×4 84126884
n×5 105158605

Division

n÷y
n÷2 10515860.5
n÷3 7010573.6666667
n÷3 5257930.25
n÷5 4206344.2

Exponentiation

ny
n2 442333288221841
n3 9.3030303068943E+21
n4 1.9565873786915E+29
n5 4.115039986076E+36

Nth Root

y√n
2√n 4586.0354337925
3√n 276.03126177434
4√n 67.720273432647
5√n 29.145731678765

Divisors of 21031721

1, 21031721

2 divisors

τ Total Divisors 2
Total number of the positive divisors of n
σ Sum of Divisors 21031722
Sum of all the positive divisors of n
s Aliquot Sum 1
Sum of the proper positive divisors of n
A Arithmetic Mean 10515861
Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G Geometric Mean 4586.0355428191
Returns the nth root of the product of n divisors
H Harmonic Mean 1.9999999049056
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21031721 can be divided by 2 positive divisors. The sum of these divisors (counting 21031721) is 21031722, the average is 10515861.

Base conversion 21031721

Base System Value
2 Binary 1010000001110101100101001
3 Ternary 1110120112002122
4 Quaternary 1100032230221
5 Quinary 20341003341
6 Senary 2030441025
8 Octal 120165451
10 Decimal 21031721
12 Duodecimal 7063175
16 Hexadecimal 140eb29
20 Vigesimal 6b8j61
36 Base36 cis6h

Cryptographic Hash Functions

md5 637fffd6baf2b3e2097de97ee397c639
sha1 f1b3071a210f0651ed42d36d3ca86413ce72a64d
sha256 823c7ec14a2e6fde8a35dbd0318af296c49116ed00c207f4f1e572e7a8fef2fd
sha512 540f6a1faf870bd21289b23473782506e8c22e66d5b79e113b9af3104d027f3640f6d0f0713da70cc0d14789dbaaf7c8fa984c1f5eeaf58680326c25de3fff17
ripemd-160 4e2030da6160498d49e923ec521ff11947484771

21031721 as geometric shapes

Circle

Radius = n
Diameter 42063442
Circumference 132146200.3719
Area 1.389631008716E+15

Sphere

Radius = n
Volume 3.896844222435E+22
Surface area 5.5585240348638E+15
Circumference 132146200.3719

Square

Length = n
Perimeter 84126884
Area 442333288221841
Diagonal 29743345.078247

Cube

Length = n
Surface area 2653999729331046
Volume 9.3030303068943E+21
Space diagonal 36428009.342613

Equilateral Triangle

Length = n
Perimeter 63095163
Area 1.9153593226981E+14
Altitude 18214004.671307

Triangular Pyramid

Length = n
Surface area 1.9153593226981E+14
Volume 1.0963726359315E+21
Height 9914448.3594157