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

21540981 (number)

21540981 is an odd 8-digits composite number following 21540980 and preceding 21540982. In scientific notation, it is written as 2.1540981 × 10^7. The sum of its digits is 30. It has a total of 3 prime factors and 8 positive divisors. There are 11190000 positive integers (up to 21540981) that are relatively prime to 21540981.

Interesting facts

21540981 has 8 divisors, whose sum is 24618528
The reverse of 21540981 is 18904512
Previous prime number is 11

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 30
Digital Root 3

Name

Name	twenty-one million five hundred forty thousand nine hundred eighty-one

Notation

Scientific notation	2.1540981 × 10^7
Engineering notation	2.1540981 × 10^6

Prime Factorization of 21540981

Prime Factorization 21 × 11 × 93251

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	21540981	Product of the distinct prime numbers

The prime factorization of 21540981 is 21 × 11 × 93251. Since it has a total of 3 prime factors.

Most popular turbo-numbers

6, 6, 36, 54, 876, 917, 1209, 305, 80216, 25435, 443044, 72691, 8352162, 3345497, 99944353, 14902521, 556186059, 256505875, 1807791854, 8099604667

Basic calculations (n = 21540981)

Multiplication

n×y

n×2	43081962
n×3	64622943
n×4	86163924
n×5	107704905

Division

n÷y

n÷2	10770490.5
n÷3	7180327
n÷3	5385245.25
n÷5	4308196.2

Exponentiation

n^y

n²	464013862442361
n³	9.9953137946075E+21
n⁴	2.1530886453868E+29
n⁵	4.6379641601592E+36

Nth Root

^y√n

²√n	4641.2262388296
³√n	278.24144870791
⁴√n	68.126545772038
⁵√n	29.285530497439

Divisors of 21540981

1, 11, 21, 231, 93251, 1025761, 1958271, 21540981

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	-21540980	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 21540981 can be divided by 8 positive divisors. The sum of these divisors (counting 21540981) is 1, the average is 0.125.

Base conversion 21540981

Base	System	Value
2	Binary	1010010001011000001110101
3	Ternary	1111112101200010
4	Quaternary	1102023001311
5	Quinary	21003302411
6	Senary	2045410433
8	Octal	122130165
10	Decimal	21540981
12	Duodecimal	7269a19
16	Hexadecimal	148b075
20	Vigesimal	6ecc91
36	Base36	ctp4l

Cryptographic Hash Functions

md5	8fb6e7d8e3c012bec239ffd136c7ad24
sha1	6eec6738e8defeb3f5ac64b9e003d4d893e7f567
sha256	c3cd84b46ec5771b39efcb93ac697cb093d3c2ff73ca10933bf41994e7b4cae5
sha512	47d885c0d8bc56f28bfa675b205d08118050e9a2a673158bd2e358faa5cfab08e47ddff8db39b2f08a80b0736913a09fb3c30c7de8290806fc36d7df1cb2ecac
ripemd-160	3122c5e57875ddf224d2a9d5be1ee0ef4431bc92

21540981 as geometric shapes

Circle

Radius = n

Diameter	43081962
Circumference	135345975.32143
Area	1.4577425414127E+15

Sphere

Radius = n

Volume	4.1868272516618E+22
Surface area	5.830970165651E+15
Circumference	135345975.32143

Square

Length = n

Perimeter	86163924
Area	464013862442361
Diagonal	30463547.477021

Cube

Length = n

Surface area	2784083174654166
Volume	9.9953137946075E+21
Space diagonal	37310073.536876

Equilateral Triangle

Length = n

Perimeter	64622943
Area	2.0092389629161E+14
Altitude	18655036.768438

Triangular Pyramid

Length = n

Surface area	2.0092389629161E+14
Volume	1.1779590273757E+21
Height	10154515.825674