21491730 (number)

21491730 is an even 8-digits composite number following 21491729 and preceding 21491731. In scientific notation, it is written as 2.1491730 × 10^7. The sum of its digits is 27. It has a total of 7 prime factors and 96 positive divisors. There are 5256576 positive integers (up to 21491730) that are relatively prime to 21491730.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.1491730 × 10^7
Engineering notation 2.1491730 × 10^6

Prime Factorization of 21491730

Prime Factorization 2 × 15 × 3 × 9 × 13 × 13 × 157

Composite number
ω Distinct Factors 6
Total number of distinct prime factors
Ω Total Factors 7
Total number of prime factors
rad Radical 1653210
Product of the distinct prime numbers

The prime factorization of 21491730 is 2 × 15 × 3 × 9 × 13 × 13 × 157. Since it has a total of 7 prime factors.

Most popular turbo-numbers

7, 1, 69, 9, 446, 942, 6628, 7791, 12870, 41583, 170417, 573009, 5479637, 4043201, 23757511, 85736520, 376164317, 792841573, 1491000201, 7143153618

Basic calculations (n = 21491730)

Multiplication

n×y
n×2 42983460
n×3 64475190
n×4 85966920
n×5 107458650

Division

n÷y
n÷2 10745865
n÷3 7163910
n÷3 5372932.5
n÷5 4298346

Exponentiation

ny
n2 461894458392900
n3 9.9269109882764E+21
n4 2.1334649069407E+29
n5 4.5851851744445E+36

Nth Root

y√n
2√n 4635.9173849412
3√n 278.02923109293
4√n 68.087571442527
5√n 29.27212662716

Divisors of 21491730

1, 2, 3, 6, 9, 13, 15, 18, 26, 27, 30, 39, 45, 54, 78, 90, 117, 135, 157, 169, 195, 234, 270, 314, 338, 351, 390, 405, 471, 507, 585, 702, 810, 942, 1014, 1170, 1413, 1521, 1755, 2041, 2355, 2535, 2826, 3042, 3510, 4082, 4239, 4563, 4710, 5070, 5265, 6123, 7065, 7605, 8478, 9126, 10530, 12246, 14130, 15210, 18369, 21195, 22815, 26533, 30615, 36738, 42390, 45630, 53066, 55107, 61230, 63585, 68445, 79599, 91845, 110214, 127170, 136890, 159198, 183690, 238797, 275535, 397995, 477594, 551070, 716391, 795990, 826605, 1193985, 1432782, 1653210, 2387970, 3581955, 7163910, 10745865, 21491730

96 divisors

τ Total Divisors 96
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21491729
Sum of the proper positive divisors of n
A Arithmetic Mean 0.010416666666667
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 96
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21491730 can be divided by 96 positive divisors. The sum of these divisors (counting 21491730) is 1, the average is 0.010416666666667.

Base conversion 21491730

Base System Value
2 Binary 1010001111111000000010010
3 Ternary 1111102220010000
4 Quaternary 1101333000102
5 Quinary 21000213410
6 Senary 2044350430
8 Octal 121770022
10 Decimal 21491730
12 Duodecimal 7245416
16 Hexadecimal 147f012
20 Vigesimal 6e696a
36 Base36 csn4i

Cryptographic Hash Functions

md5 944c0ee066530a2f0a2fe070b9e53263
sha1 f74b8540a529bbdfd4ed0c434dd2baf99ee52408
sha256 8a297c38ea0ffcb13220a145e2bbe5e237e6d7d3acd9cdc42ee51a18abc5261a
sha512 13980dcafd6c902159542b9ff6c900b2fada06d44e13361c7f2eabbd9ddfc3759df5f814f1d25cf32ed2bb31c2a5c9f54d72ed4ff78ce3def0361a706c7ae741
ripemd-160 b6db5b89c8583865a31a822f871b57b7232a7823

21491730 as geometric shapes

Circle

Radius = n
Diameter 42983460
Circumference 135036522.16187
Area 1.451084237221E+15

Sphere

Radius = n
Volume 4.1581747511479E+22
Surface area 5.8043369488839E+15
Circumference 135036522.16187

Square

Length = n
Perimeter 85966920
Area 461894458392900
Diagonal 30393896.044861

Cube

Length = n
Surface area 2771366750357400
Volume 9.9269109882764E+21
Space diagonal 37224768.302552

Equilateral Triangle

Length = n
Perimeter 64475190
Area 2.0000616741775E+14
Altitude 18612384.151276

Triangular Pyramid

Length = n
Surface area 2.0000616741775E+14
Volume 1.1698976793409E+21
Height 10131298.68162