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

21495981 (number)

21495981 is an odd 8-digits composite number following 21495980 and preceding 21495982. In scientific notation, it is written as 2.1495981 × 10^7. The sum of its digits is 39. It has a total of 2 prime factors and 4 positive divisors. There are 13228272 positive integers (up to 21495981) that are relatively prime to 21495981.

Interesting facts

21495981 has 4 divisors, whose sum is 22047200
The reverse of 21495981 is 18959412
Previous prime number is 39

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 39
Digital Root 3

Name

Name	twenty-one million four hundred ninety-five thousand nine hundred eighty-one

Notation

Scientific notation	2.1495981 × 10^7
Engineering notation	2.1495981 × 10^6

Prime Factorization of 21495981

Prime Factorization 39 × 551179

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	21495981	Product of the distinct prime numbers

The prime factorization of 21495981 is 39 × 551179. Since it has a total of 2 prime factors.

Most popular turbo-numbers

8, 3, 27, 91, 676, 587, 7188, 5141, 87927, 93411, 126653, 127402, 1257432, 6950924, 32607916, 82332685, 154200286, 920048564, 3387153305, 260814610

Basic calculations (n = 21495981)

Multiplication

n×y

n×2	42991962
n×3	64487943
n×4	85983924
n×5	107479905

Division

n÷y

n÷2	10747990.5
n÷3	7165327
n÷3	5373995.25
n÷5	4299196.2

Exponentiation

n^y

n²	462077199152361
n³	9.9328026935124E+21
n⁴	2.1351533797649E+29
n⁵	4.5897216483512E+36

Nth Root

^y√n

²√n	4636.3758475775
³√n	278.0475610016
⁴√n	68.090938072386
⁵√n	29.273284523395

Divisors of 21495981

1, 39, 551179, 21495981

4 divisors

τ	Total Divisors	4	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-21495980	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.25	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	4	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21495981 can be divided by 4 positive divisors. The sum of these divisors (counting 21495981) is 1, the average is 0.25.

Base conversion 21495981

Base	System	Value
2	Binary	1010010000000000010101101
3	Ternary	1111110002221110
4	Quaternary	1102000002231
5	Quinary	21000332411
6	Senary	2044422233
8	Octal	122000255
10	Decimal	21495981
12	Duodecimal	7247979
16	Hexadecimal	14800ad
20	Vigesimal	6e6jj1
36	Base36	csqel

Cryptographic Hash Functions

md5	f158f0b826b16f4ea9d8035f3c43e3c5
sha1	8b6466c2d12012d7462b16eef475c92d867d0696
sha256	0764cf152348543d1d44749d801b57e06820aaac5745072b06359a18c923c79f
sha512	0c63fe0ac9b11e73102fb06f73f060a022146d7d2f551bc6a6bce06475b887ff8c043102d620cbb6155fd7ac8f9f383fb9b6b70172ce5d6cea32fe4d9fd25a85
ripemd-160	d6f7b138aec806718933d372a9604af069d51371

21495981 as geometric shapes

Circle

Radius = n

Diameter	42991962
Circumference	135063231.98261
Area	1.4516583342484E+15

Sphere

Radius = n

Volume	4.160642662866E+22
Surface area	5.8066333369936E+15
Circumference	135063231.98261

Square

Length = n

Perimeter	85983924
Area	462077199152361
Diagonal	30399907.866714

Cube

Length = n

Surface area	2772463194914166
Volume	9.9328026935124E+21
Space diagonal	37232131.250535

Equilateral Triangle

Length = n

Perimeter	64487943
Area	2.0008529648775E+14
Altitude	18616065.625268

Triangular Pyramid

Length = n

Surface area	2.0008529648775E+14
Volume	1.1705920234618E+21
Height	10133302.622238