21387978, twenty-one million three hundred eighty-seven thousand nine hundred seventy-eight: Prime Factorization, Divisors, Base conversion, Basic calculations, Geometric Shapes

Max	9223372036854775807
25835	Positive integer
0b10001100	Binary number
01771452	Octal number
0x129abf	Hex number
5.012 * 10^7	Scientific notation
2^4 * 5	Factorized form
*	Random number

Interesting facts

21387978 has 32 divisors, whose sum is 37109520
The reverse of 21387978 is 87978312
Previous prime number is 73

Basic properties

Is Prime? no
Number parity even
Number length 8
Sum of Digits 45
Digital Root 9

Name

Name	twenty-one million three hundred eighty-seven thousand nine hundred seventy-eight

Notation

Scientific notation	2.1387978 × 10^7
Engineering notation	2.1387978 × 10^6

Prime Factorization of 21387978

Prime Factorization 2 × 9 × 41 × 73 × 397

Composite number

ω	Distinct Factors	5	Total number of distinct prime factors
Ω	Total Factors	5	Total number of prime factors
rad	Radical	21387978	Product of the distinct prime numbers

The prime factorization of 21387978 is 2 × 9 × 41 × 73 × 397. Since it has a total of 5 prime factors.

Most popular turbo-numbers

5, 8, 59, 89, 665, 559, 7868, 1900, 88250, 93779, 806806, 578818, 2421266, 1644795, 70356018, 52678787, 37998926, 546297194, 9699253294, 1655422896

Basic calculations (n = 21387978)

Multiplication

n×y

n×2	42775956
n×3	64163934
n×4	85551912
n×5	106939890

Division

n÷y

n÷2	10693989
n÷3	7129326
n÷3	5346994.5
n÷5	4277595.6

Exponentiation

n^y

n²	457445602928484
n³	9.7838364916312E+21
n⁴	2.092564796386E+29
n⁵	4.4755729828679E+36

Nth Root

^y√n

²√n	4624.7138289844
³√n	277.5811109378
⁴√n	68.00524853998
⁵√n	29.243809471754

Divisors of 21387978

1, 2, 9, 18, 41, 73, 82, 146, 369, 397, 657, 738, 794, 1314, 2993, 3573, 5986, 7146, 16277, 26937, 28981, 32554, 53874, 57962, 146493, 260829, 292986, 521658, 1188221, 2376442, 10693989, 21387978

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	-21387977	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 21387978 can be divided by 32 positive divisors. The sum of these divisors (counting 21387978) is 1, the average is 0.03125.

Base conversion 21387978

Base	System	Value
2	Binary	1010001100101101011001010
3	Ternary	1111020121210100
4	Quaternary	1101211223022
5	Quinary	20433403403
6	Senary	2042230230
8	Octal	121455312
10	Decimal	21387978
12	Duodecimal	71b5376
16	Hexadecimal	1465aca
20	Vigesimal	6dd9ii
36	Base36	cqf2i

Cryptographic Hash Functions

md5	3b438c12dbea9776c1636c9fccc13cbc
sha1	9a77e74e5f9dad6643c65141612a2399b03605ff
sha256	3207cc1137de8f14aa5a2d754d09d6f2b575e31e6173a6db6f7de263e9d476e8
sha512	057d60594884656ce17b2a0ae6fff8fd2d4c2b1efaed1e7d826f73cfbf7d6c58dd40d5ff412c3f053bc340cc89afe3722d4c792940aaaf3cafbcbfa0764dbb89
ripemd-160	6c63b466d6e19d0104b52ed005a2b7ec9cf1f93e

21387978 as geometric shapes

Circle

Radius = n

Diameter	42775956
Circumference	134384629.11988
Area	1.4371077455771E+15

Sphere

Radius = n

Volume	4.0982438461376E+22
Surface area	5.7484309823083E+15
Circumference	134384629.11988

Square

Length = n

Perimeter	85551912
Area	457445602928484
Diagonal	30247168.559337

Cube

Length = n

Surface area	2744673617570904
Volume	9.7838364916312E+21
Space diagonal	37045064.567165

Equilateral Triangle

Length = n

Perimeter	64163934
Area	1.9807975649278E+14
Altitude	18522532.283583

Triangular Pyramid

Length = n

Surface area	1.9807975649278E+14
Volume	1.1530361882088E+21
Height	10082389.519779