21031491 (number)

21031491 is an odd 8-digits composite number following 21031490 and preceding 21031492. In scientific notation, it is written as 2.1031491 × 10^7. The sum of its digits is 21. It has a total of 2 prime factors and 4 positive divisors. There are 12942432 positive integers (up to 21031491) that are relatively prime to 21031491.

Interesting facts

Basic properties

Name

Name twenty-one million thirty-one thousand four hundred ninety-one

Notation

Scientific notation 2.1031491 × 10^7
Engineering notation 2.1031491 × 10^6

Prime Factorization of 21031491

Prime Factorization 39 × 539269

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 21031491
Product of the distinct prime numbers

The prime factorization of 21031491 is 39 × 539269. Since it has a total of 2 prime factors.

Most popular turbo-numbers

3, 3, 52, 71, 679, 467, 7131, 8711, 35843, 72378, 390214, 933907, 9922047, 8162373, 28781055, 4265688, 445245695, 171544778, 9936068161, 5648802162

Basic calculations (n = 21031491)

Multiplication

n×y
n×2 42062982
n×3 63094473
n×4 84125964
n×5 105157455

Division

n÷y
n÷2 10515745.5
n÷3 7010497
n÷3 5257872.75
n÷5 4206298.2

Exponentiation

ny
n2 442323613683081
n3 9.3027251002632E+21
n4 1.9565017922166E+29
n5 4.1148149834487E+36

Nth Root

y√n
2√n 4586.0103575984
3√n 276.0302555574
4√n 67.720088286995
5√n 29.145667931746

Divisors of 21031491

1, 39, 539269, 21031491

4 divisors

τ Total Divisors 4
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21031490
Sum of the proper positive divisors of n
A Arithmetic Mean 0.25
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 4
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21031491 can be divided by 4 positive divisors. The sum of these divisors (counting 21031491) is 1, the average is 0.25.

Base conversion 21031491

Base System Value
2 Binary 1010000001110101001000011
3 Ternary 1110120111210010
4 Quaternary 1100032221003
5 Quinary 20341001431
6 Senary 2030440003
8 Octal 120165103
10 Decimal 21031491
12 Duodecimal 7063003
16 Hexadecimal 140ea43
20 Vigesimal 6b8ieb
36 Base36 cis03

Cryptographic Hash Functions

md5 565d1fa5cf8f7655b57aaccb0fe1dd9f
sha1 b3f20ffe706dc1141bc9be5ad7b79bc4f1778642
sha256 00842391541a6028554132f403e6fdf9e8ced6aaa80df7d7f07323c93a9f8c6a
sha512 739b0f2e75c50de4621f162bdd6a10d69d88d132000304ff160bec6f565cc04ce4bc16450a14e8a02d6f9b0c15d09ae7ba1b475796ac3437ff285a31630ae1f6
ripemd-160 40700ef4ade8ee07727e639df9aa7804605ea6e2

21031491 as geometric shapes

Circle

Radius = n
Diameter 42062982
Circumference 132144755.23928
Area 1.3896006152561E+15

Sphere

Radius = n
Volume 3.8967163777803E+22
Surface area 5.5584024610242E+15
Circumference 132144755.23928

Square

Length = n
Perimeter 84125964
Area 442323613683081
Diagonal 29743019.809128

Cube

Length = n
Surface area 2653941682098486
Volume 9.3027251002632E+21
Space diagonal 36427610.970928

Equilateral Triangle

Length = n
Perimeter 63094473
Area 1.9153174307164E+14
Altitude 18213805.485464

Triangular Pyramid

Length = n
Surface area 1.9153174307164E+14
Volume 1.0963366669851E+21
Height 9914339.9363759