21508728 (number)

21508728 is an even 8-digits composite number following 21508727 and preceding 21508729. In scientific notation, it is written as 2.1508728 × 10^7. The sum of its digits is 33. It has a total of 6 prime factors and 32 positive divisors. There are 7140960 positive integers (up to 21508728) that are relatively prime to 21508728.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.1508728 × 10^7
Engineering notation 2.1508728 × 10^6

Prime Factorization of 21508728

Prime Factorization 2 × 2 × 2 × 3 × 271 × 3307

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 6
Total number of prime factors
rad Radical 5377182
Product of the distinct prime numbers

The prime factorization of 21508728 is 2 × 2 × 2 × 3 × 271 × 3307. Since it has a total of 6 prime factors.

Most popular turbo-numbers

7, 5, 35, 21, 634, 211, 6227, 6299, 54689, 19197, 355519, 502966, 5206697, 214177, 44521258, 21419823, 232794525, 542576148, 628038878, 8042735964

Basic calculations (n = 21508728)

Multiplication

n×y
n×2 43017456
n×3 64526184
n×4 86034912
n×5 107543640

Division

n÷y
n÷2 10754364
n÷3 7169576
n÷3 5377182
n÷5 4301745.6

Exponentiation

ny
n2 462625380177984
n3 9.9504834681448E+21
n4 2.1402224238482E+29
n5 4.6033461974053E+36

Nth Root

y√n
2√n 4637.7503166945
3√n 278.10251037272
4√n 68.101030217571
5√n 29.27675547994

Divisors of 21508728

1, 2, 3, 4, 6, 8, 12, 24, 271, 542, 813, 1084, 1626, 2168, 3252, 3307, 6504, 6614, 9921, 13228, 19842, 26456, 39684, 79368, 896197, 1792394, 2688591, 3584788, 5377182, 7169576, 10754364, 21508728

32 divisors

τ Total Divisors 32
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21508727
Sum of the proper positive divisors of n
A Arithmetic Mean 0.03125
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 32
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21508728 can be divided by 32 positive divisors. The sum of these divisors (counting 21508728) is 1, the average is 0.03125.

Base conversion 21508728

Base System Value
2 Binary 1010010000011001001111000
3 Ternary 1111110202102120
4 Quaternary 1102003021320
5 Quinary 21001234403
6 Senary 2045001240
8 Octal 122031170
10 Decimal 21508728
12 Duodecimal 7253220
16 Hexadecimal 1483278
20 Vigesimal 6e8bg8
36 Base36 ct08o

Cryptographic Hash Functions

md5 1d4666e52b8aff589e613e9a28429ef6
sha1 6b910b38d7c90a95d3c67a4c1b8044dddae71e63
sha256 9945ba33bac209023ce22c3d9f16450de6e817583cc057b2766440a40882c5f4
sha512 d5374a6fc5a8bca4c3c95dabec661c45831e81dab863c463b44786310040366c7bff22c7e9cd7b7f149157fbd9d0b74b365dae30a54ee6f2e4f85359ede8b639
ripemd-160 2865961dd4a04ebb795346f77d09057a65112ec0

21508728 as geometric shapes

Circle

Radius = n
Diameter 43017456
Circumference 135143323.74572
Area 1.4533804957313E+15

Sphere

Radius = n
Volume 4.1680487684254E+22
Surface area 5.8135219829254E+15
Circumference 135143323.74572

Square

Length = n
Perimeter 86034912
Area 462625380177984
Diagonal 30417934.846994

Cube

Length = n
Surface area 2775752281067904
Volume 9.9504834681448E+21
Space diagonal 37254209.702179

Equilateral Triangle

Length = n
Perimeter 64526184
Area 2.0032266583478E+14
Altitude 18627104.85109

Triangular Pyramid

Length = n
Surface area 2.0032266583478E+14
Volume 1.172675722735E+21
Height 10139311.615665