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

21491257 (number)

21491257 is an odd 8-digits composite number following 21491256 and preceding 21491258. In scientific notation, it is written as 2.1491257 × 10^7. The sum of its digits is 31. It has a total of 3 prime factors and 8 positive divisors. There are 20883840 positive integers (up to 21491257) that are relatively prime to 21491257.

Interesting facts

21491257 has 8 divisors, whose sum is 22102920
The reverse of 21491257 is 75219412
Previous prime number is 1789

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 31
Digital Root 4

Name

Name	twenty-one million four hundred ninety-one thousand two hundred fifty-seven

Notation

Scientific notation	2.1491257 × 10^7
Engineering notation	2.1491257 × 10^6

Prime Factorization of 21491257

Prime Factorization 41 × 1789 × 293

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	21491257	Product of the distinct prime numbers

The prime factorization of 21491257 is 41 × 1789 × 293. Since it has a total of 3 prime factors.

Most popular turbo-numbers

4, 3, 81, 11, 672, 362, 6736, 5224, 1017, 34381, 786539, 314713, 5110360, 7323267, 34533835, 30532897, 493314857, 743619653, 1747123002, 7383210735

Basic calculations (n = 21491257)

Multiplication

n×y

n×2	42982514
n×3	64473771
n×4	85965028
n×5	107456285

Division

n÷y

n÷2	10745628.5
n÷3	7163752.3333333
n÷3	5372814.25
n÷5	4298251.4

Exponentiation

n^y

n²	461874127440049
n³	9.9262555744648E+21
n⁴	2.1332770959851E+29
n⁵	4.5846806322029E+36

Nth Root

^y√n

²√n	4635.8663699464
³√n	278.02719141238
⁴√n	68.087196813692
⁵√n	29.271997779107

Divisors of 21491257

1, 41, 293, 1789, 12013, 73349, 524177, 21491257

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	-21491256	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 21491257 can be divided by 8 positive divisors. The sum of these divisors (counting 21491257) is 1, the average is 0.125.

Base conversion 21491257

Base	System	Value
2	Binary	1010001111110111000111001
3	Ternary	1111102212110111
4	Quaternary	1101332320321
5	Quinary	21000210012
6	Senary	2044344321
8	Octal	121767071
10	Decimal	21491257
12	Duodecimal	72450a1
16	Hexadecimal	147ee39
20	Vigesimal	6e682h
36	Base36	csmrd

Cryptographic Hash Functions

md5	662002c297cb87773601c08b7206ad12
sha1	835a1cc489d141d1be8acc2a517fb4a2cbbd4d65
sha256	713fac20e753fa3d58a017537d6e7436adfbd7ccd9a0bd05ceb343a0658b71dc
sha512	69456d8fc62f658187b72e8f49d7ab1763620c24b6b48a0906a5d23380ba7de54b750f9e3b814562df876192540d67cbb226d89198b0549a96eb19b6bdd0177d
ripemd-160	9d16014775615a9788c2ef3adb9843554efb7554

21491257 as geometric shapes

Circle

Radius = n

Diameter	42982514
Circumference	135033550.21522
Area	1.4510203656489E+15

Sphere

Radius = n

Volume	4.1579002120525E+22
Surface area	5.8040814625954E+15
Circumference	135033550.21522

Square

Length = n

Perimeter	85965028
Area	461874127440049
Diagonal	30393227.121846

Cube

Length = n

Surface area	2771244764640294
Volume	9.9262555744648E+21
Space diagonal	37223949.04252

Equilateral Triangle

Length = n

Perimeter	64473771
Area	1.9999736385693E+14
Altitude	18611974.52126

Triangular Pyramid

Length = n

Surface area	1.9999736385693E+14
Volume	1.1698204380825E+21
Height	10131075.707282