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

21397918 (number)

21397918 is an even 8-digits composite number following 21397917 and preceding 21397919. In scientific notation, it is written as 2.1397918 × 10^7. The sum of its digits is 40. It has a total of 3 prime factors and 8 positive divisors. There are 10450104 positive integers (up to 21397918) that are relatively prime to 21397918.

Interesting facts

21397918 has 8 divisors, whose sum is 32843448
The reverse of 21397918 is 81979312
Previous prime number is 43

Basic properties

Is Prime? no
Number parity even
Number length 8
Sum of Digits 40
Digital Root 4

Name

Name	twenty-one million three hundred ninety-seven thousand nine hundred eighteen

Notation

Scientific notation	2.1397918 × 10^7
Engineering notation	2.1397918 × 10^6

Prime Factorization of 21397918

Prime Factorization 2 × 43 × 248813

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	21397918	Product of the distinct prime numbers

The prime factorization of 21397918 is 2 × 43 × 248813. Since it has a total of 3 prime factors.

Most popular turbo-numbers

2, 6, 36, 81, 912, 578, 5654, 7374, 54693, 54307, 6463, 904211, 4003924, 1347903, 26035254, 93127900, 493212419, 186869636, 4398472164, 2328131519

Basic calculations (n = 21397918)

Multiplication

n×y

n×2	42795836
n×3	64193754
n×4	85591672
n×5	106989590

Division

n÷y

n÷2	10698959
n÷3	7132639.3333333
n÷3	5349479.5
n÷5	4279583.6

Exponentiation

n^y

n²	457870894734724
n³	9.7974838601203E+21
n⁴	2.0964575624518E+29
n⁵	4.4859827011823E+36

Nth Root

^y√n

²√n	4625.7883652411
³√n	277.62410594675
⁴√n	68.013148473226
⁵√n	29.246527161509

Divisors of 21397918

1, 2, 43, 86, 248813, 497626, 10698959, 21397918

8 divisors

τ	Total Divisors	8	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-21397917	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.125	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	8	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21397918 can be divided by 8 positive divisors. The sum of these divisors (counting 21397918) is 1, the average is 0.125.

Base conversion 21397918

Base	System	Value
2	Binary	1010001101000000110011110
3	Ternary	1111021010102111
4	Quaternary	1101220012132
5	Quinary	20434213133
6	Senary	2042344234
8	Octal	121500636
10	Decimal	21397918
12	Duodecimal	71bb07a
16	Hexadecimal	146819e
20	Vigesimal	6deefi
36	Base36	cqmqm

Cryptographic Hash Functions

md5	132d590d93067af43505dfb585e5b986
sha1	2c21458444bcdcdec18b63f3eb7972f1aa11083a
sha256	ec0e71099e285993010fe0fa4eeb5c043d37608e904d7b7d0720a535cc552ba8
sha512	bff270334e8390e67afdc45a6eaa1d108adec8827d856c33dc782a21f0cd1f37962b1843ce8546c93d1ab26333969d6a8355df7f75dbda5ef2e5eaf8d8922c51
ripemd-160	998a7258f97a5db84b1d5b32a23538fade4bbb05

21397918 as geometric shapes

Circle

Radius = n

Diameter	42795836
Circumference	134447083.98183
Area	1.4384438391912E+15

Sphere

Radius = n

Volume	4.1039604424824E+22
Surface area	5.7537753567648E+15
Circumference	134447083.98183

Square

Length = n

Perimeter	85591672
Area	457870894734724
Diagonal	30261225.842147

Cube

Length = n

Surface area	2747225368408344
Volume	9.7974838601203E+21
Space diagonal	37062281.152193

Equilateral Triangle

Length = n

Perimeter	64193754
Area	1.9826391324689E+14
Altitude	18531140.576096

Triangular Pyramid

Length = n

Surface area	1.9826391324689E+14
Volume	1.1546445460095E+21
Height	10087075.280716