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

21252981 (number)

21252981 is an odd 8-digits composite number following 21252980 and preceding 21252982. In scientific notation, it is written as 2.1252981 × 10^7. The sum of its digits is 30. It has a total of 2 prime factors and 4 positive divisors. There are 14168652 positive integers (up to 21252981) that are relatively prime to 21252981.

Interesting facts

21252981 has 4 divisors, whose sum is 28337312
The reverse of 21252981 is 18925212
Previous prime number is 3

Basic properties

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

Name

Name	twenty-one million two hundred fifty-two thousand nine hundred eighty-one

Notation

Scientific notation	2.1252981 × 10^7
Engineering notation	2.1252981 × 10^6

Prime Factorization of 21252981

Prime Factorization 3 × 7084327

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	21252981	Product of the distinct prime numbers

The prime factorization of 21252981 is 3 × 7084327. Since it has a total of 2 prime factors.

Most popular turbo-numbers

3, 3, 82, 31, 897, 819, 7600, 4546, 91060, 47079, 987504, 763355, 1055894, 9791062, 4788188, 97425765, 3004193, 611812165, 9152923325, 3229612676

Basic calculations (n = 21252981)

Multiplication

n×y

n×2	42505962
n×3	63758943
n×4	85011924
n×5	106264905

Division

n÷y

n÷2	10626490.5
n÷3	7084327
n÷3	5313245.25
n÷5	4250596.2

Exponentiation

n^y

n²	451689201386361
n³	9.5997420149695E+21
n⁴	2.0402313464905E+29
n⁵	4.3360998042567E+36

Nth Root

^y√n

²√n	4610.0955521551
³√n	276.99586417037
⁴√n	67.897684438831
⁵√n	29.206799599715

Divisors of 21252981

1, 3, 7084327, 21252981

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	-21252980	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 21252981 can be divided by 4 positive divisors. The sum of these divisors (counting 21252981) is 1, the average is 0.25.

Base conversion 21252981

Base	System	Value
2	Binary	1010001000100101101110101
3	Ternary	1110222202121110
4	Quaternary	1101010231311
5	Quinary	20420043411
6	Senary	2035305233
8	Octal	121045565
10	Decimal	21252981
12	Duodecimal	714b219
16	Hexadecimal	1444b75
20	Vigesimal	6cgc91
36	Base36	cniwl

Cryptographic Hash Functions

md5	5c468d4db779053bd5ef4b17be1f22bb
sha1	6e658efe60a2229565c99c6bcb236d513c22535c
sha256	4cd8fc79a9fae2893f1967fe7ef0ab80fb08d2892bb8ef51466e9fcac22af0c8
sha512	e990cfd29e9bdec405a2cbf60c801ad2fdd6bb7230717e297ed0205be65e412eb9be15908ff5edb2353adfcdbcf131430baae308b6fc483bc9ac295cfae959ca
ripemd-160	244bb31a53eab6cbdea8a7eb44a78dd888841bd9

21252981 as geometric shapes

Circle

Radius = n

Diameter	42505962
Circumference	133536417.95297
Area	1.4190234767812E+15

Sphere

Radius = n

Volume	4.0211305320781E+22
Surface area	5.6760939071249E+15
Circumference	133536417.95297

Square

Length = n

Perimeter	85011924
Area	451689201386361
Diagonal	30056253.971058

Cube

Length = n

Surface area	2710135208318166
Volume	9.5997420149695E+21
Space diagonal	36811242.904296

Equilateral Triangle

Length = n

Perimeter	63758943
Area	1.9558716150785E+14
Altitude	18405621.452148

Triangular Pyramid

Length = n

Surface area	1.9558716150785E+14
Volume	1.1313404460711E+21
Height	10018751.323686