21388730 (number)

21388730 is an even 8-digits composite number following 21388729 and preceding 21388731. In scientific notation, it is written as 2.1388730 × 10^7. The sum of its digits is 32. It has a total of 4 prime factors and 16 positive divisors. There are 7777680 positive integers (up to 21388730) that are relatively prime to 21388730.

Interesting facts

Basic properties

Name

Name twenty-one million three hundred eighty-eight thousand seven hundred thirty

Notation

Scientific notation 2.1388730 × 10^7
Engineering notation 2.1388730 × 10^6

Prime Factorization of 21388730

Prime Factorization 2 × 11 × 5 × 194443

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 21388730
Product of the distinct prime numbers

The prime factorization of 21388730 is 2 × 11 × 5 × 194443. Since it has a total of 4 prime factors.

Most popular turbo-numbers

3, 4, 54, 34, 306, 72, 1728, 5670, 66782, 25520, 670171, 783427, 4669897, 9955045, 19351109, 55129169, 216430828, 426268878, 9097176951, 2429392295

Basic calculations (n = 21388730)

Multiplication

n×y
n×2 42777460
n×3 64166190
n×4 85554920
n×5 106943650

Division

n÷y
n÷2 10694365
n÷3 7129576.6666667
n÷3 5347182.5
n÷5 4277746

Exponentiation

ny
n2 457477771012900
n3 9.7848685251967E+21
n4 2.0928591097093E+29
n5 4.4763598425613E+36

Nth Root

y√n
2√n 4624.7951305977
3√n 277.58436414464
4√n 68.005846297195
5√n 29.244015110973

Divisors of 21388730

1, 2, 5, 10, 11, 22, 55, 110, 194443, 388886, 972215, 1944430, 2138873, 4277746, 10694365, 21388730

16 divisors

τ Total Divisors 16
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21388729
Sum of the proper positive divisors of n
A Arithmetic Mean 0.0625
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 16
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21388730 can be divided by 16 positive divisors. The sum of these divisors (counting 21388730) is 1, the average is 0.0625.

Base conversion 21388730

Base System Value
2 Binary 1010001100101110110111010
3 Ternary 1111020122211012
4 Quaternary 1101211312322
5 Quinary 20433414410
6 Senary 2042233522
8 Octal 121456672
10 Decimal 21388730
12 Duodecimal 71b58a2
16 Hexadecimal 1465dba
20 Vigesimal 6ddbga
36 Base36 cqfne

Cryptographic Hash Functions

md5 7e108e8696b8b6882bef1770d8154085
sha1 0a302f36c73d0fff537b684c137049285cc2adea
sha256 2947a659b8fa72baa586136087d994259b8318a69270a907d247d9db7b8a5e02
sha512 0411617b5fac8bb863a0c57fa355fd4fafc3144fa157644e823cbd28d35ebbf81570dc5ceb484524848c42274c52b852de70eadc17648e07866c452b1d198a8b
ripemd-160 4e01a5017722f8c1671ec2c3d78cbffa430a8498

21388730 as geometric shapes

Circle

Radius = n
Diameter 42777460
Circumference 134389354.07523
Area 1.4372088045948E+15

Sphere

Radius = n
Volume 4.0986761433467E+22
Surface area 5.748835218379E+15
Circumference 134389354.07523

Square

Length = n
Perimeter 85554920
Area 457477771012900
Diagonal 30248232.047936

Cube

Length = n
Surface area 2744866626077400
Volume 9.7848685251967E+21
Space diagonal 37046367.069373

Equilateral Triangle

Length = n
Perimeter 64166190
Area 1.9809368568193E+14
Altitude 18523183.534686

Triangular Pyramid

Length = n
Surface area 1.9809368568193E+14
Volume 1.1531578145309E+21
Height 10082744.015979