21508720 (number)

21508720 is an even 8-digits composite number following 21508719 and preceding 21508721. In scientific notation, it is written as 2.1508720 × 10^7. The sum of its digits is 25. It has a total of 8 prime factors and 80 positive divisors. There are 8128512 positive integers (up to 21508720) that are relatively prime to 21508720.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.1508720 × 10^7
Engineering notation 2.1508720 × 10^6

Prime Factorization of 21508720

Prime Factorization 2 × 2 × 2 × 2 × 5 × 29 × 127 × 73

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 8
Total number of prime factors
rad Radical 2688590
Product of the distinct prime numbers

The prime factorization of 21508720 is 2 × 2 × 2 × 2 × 5 × 29 × 127 × 73. Since it has a total of 8 prime factors.

Most popular turbo-numbers

2, 10, 61, 52, 597, 877, 7066, 4006, 46345, 34276, 780334, 467151, 8624028, 9148915, 25026478, 36163017, 420696586, 524061637, 4157544901, 8008803002

Basic calculations (n = 21508720)

Multiplication

n×y
n×2 43017440
n×3 64526160
n×4 86034880
n×5 107543600

Division

n÷y
n÷2 10754360
n÷3 7169573.3333333
n÷3 5377180
n÷5 4301744

Exponentiation

ny
n2 462625036038400
n3 9.9504723651399E+21
n4 2.1402192396953E+29
n5 4.6033376365219E+36

Nth Root

y√n
2√n 4637.7494542073
3√n 278.10247589338
4√n 68.101023885161
5√n 29.276753302089

Divisors of 21508720

1, 2, 4, 5, 8, 10, 16, 20, 29, 40, 58, 73, 80, 116, 127, 145, 146, 232, 254, 290, 292, 365, 464, 508, 580, 584, 635, 730, 1016, 1160, 1168, 1270, 1460, 2032, 2117, 2320, 2540, 2920, 3683, 4234, 5080, 5840, 7366, 8468, 9271, 10160, 10585, 14732, 16936, 18415, 18542, 21170, 29464, 33872, 36830, 37084, 42340, 46355, 58928, 73660, 74168, 84680, 92710, 147320, 148336, 169360, 185420, 268859, 294640, 370840, 537718, 741680, 1075436, 1344295, 2150872, 2688590, 4301744, 5377180, 10754360, 21508720

80 divisors

τ Total Divisors 80
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21508719
Sum of the proper positive divisors of n
A Arithmetic Mean 0.0125
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 80
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21508720 can be divided by 80 positive divisors. The sum of these divisors (counting 21508720) is 1, the average is 0.0125.

Base conversion 21508720

Base System Value
2 Binary 1010010000011001001110000
3 Ternary 1111110202102021
4 Quaternary 1102003021300
5 Quinary 21001234340
6 Senary 2045001224
8 Octal 122031160
10 Decimal 21508720
12 Duodecimal 7253214
16 Hexadecimal 1483270
20 Vigesimal 6e8bg0
36 Base36 ct08g

Cryptographic Hash Functions

md5 71e144626978cb168018dc86113eed17
sha1 b79149ac032868044263876c4f9df01133b07015
sha256 a999d97972a635ce9b33e6765eceda8b6f21fda1fbbe776cac89c23ba225cd6f
sha512 c8c0b3434858a7d6129b0f60e207fa40b188f9737f6fc725f81571f0540ac0c13e2d80b9076743bef0fa1f8d38bcdb8a21b65513fa561a9109a11896521870bb
ripemd-160 962a32ff2f88f02d28cb7a69958f43bf399963d6

21508720 as geometric shapes

Circle

Radius = n
Diameter 43017440
Circumference 135143273.48024
Area 1.453379414585E+15

Sphere

Radius = n
Volume 4.1680441176095E+22
Surface area 5.8135176583398E+15
Circumference 135143273.48024

Square

Length = n
Perimeter 86034880
Area 462625036038400
Diagonal 30417923.533285

Cube

Length = n
Surface area 2775750216230400
Volume 9.9504723651399E+21
Space diagonal 37254195.845773

Equilateral Triangle

Length = n
Perimeter 64526160
Area 2.0032251681797E+14
Altitude 18627097.922886

Triangular Pyramid

Length = n
Surface area 2.0032251681797E+14
Volume 1.1726744142333E+21
Height 10139307.844428