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

21031387 (number)

21031387 is an odd 8-digits composite number following 21031386 and preceding 21031388. In scientific notation, it is written as 2.1031387 × 10^7. The sum of its digits is 25. It has a total of 3 prime factors and 8 positive divisors. There are 19354368 positive integers (up to 21031387) that are relatively prime to 21031387.

Interesting facts

21031387 has 8 divisors, whose sum is 22718304
The reverse of 21031387 is 78313012
Previous prime number is 353

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 25
Digital Root 7

Name

Name	twenty-one million thirty-one thousand three hundred eighty-seven

Notation

Scientific notation	2.1031387 × 10^7
Engineering notation	2.1031387 × 10^6

Prime Factorization of 21031387

Prime Factorization 13 × 353 × 4583

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	21031387	Product of the distinct prime numbers

The prime factorization of 21031387 is 13 × 353 × 4583. Since it has a total of 3 prime factors.

Most popular turbo-numbers

8, 7, 75, 62, 843, 272, 7424, 3210, 58801, 91251, 808421, 77345, 8146682, 959609, 59159347, 82169669, 211501855, 410659971, 4207928406, 6618737729

Basic calculations (n = 21031387)

Multiplication

n×y

n×2	42062774
n×3	63094161
n×4	84125548
n×5	105156935

Division

n÷y

n÷2	10515693.5
n÷3	7010462.3333333
n÷3	5257846.75
n÷5	4206277.4

Exponentiation

n^y

n²	442319239143769
n³	9.3025870959782E+21
n⁴	1.9564630931672E+29
n⁵	4.1147132463617E+36

Nth Root

^y√n

²√n	4585.9990187526
³√n	276.02980056994
⁴√n	67.720004568463
⁵√n	29.145639106823

Divisors of 21031387

1, 13, 353, 4583, 4589, 59579, 1617799, 21031387

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	-21031386	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 21031387 can be divided by 8 positive divisors. The sum of these divisors (counting 21031387) is 1, the average is 0.125.

Base conversion 21031387

Base	System	Value
2	Binary	1010000001110100111011011
3	Ternary	1110120111122021
4	Quaternary	1100032213123
5	Quinary	20341001022
6	Senary	2030435311
8	Octal	120164733
10	Decimal	21031387
12	Duodecimal	7062b37
16	Hexadecimal	140e9db
20	Vigesimal	6b8i97
36	Base36	cirx7

Cryptographic Hash Functions

md5	e74c68d36a877999bda89d894ab58bdc
sha1	a685fa1e82939e12e7d1737bc52e869a7d2bdebd
sha256	3904ae2ead9c2ef6f370787d71ce35759b97b2eff924c6e94d349c566fadc13b
sha512	203d78ab4fbcb8d412712885995acaaff8bf8c4a49c29bae816db33e12d67e572308379b22a3f4a2e586f54b8dcc2064f9c09fc73c0142fd30ea18ea97dd9e1b
ripemd-160	ae77decefed78002236223a80fb87a63b0489483

21031387 as geometric shapes

Circle

Radius = n

Diameter	42062774
Circumference	132144101.78801
Area	1.3895868722355E+15

Sphere

Radius = n

Volume	3.8966585706806E+22
Surface area	5.558347488942E+15
Circumference	132144101.78801

Square

Length = n

Perimeter	84125548
Area	442319239143769
Diagonal	29742872.730917

Cube

Length = n

Surface area	2653915434862614
Volume	9.3025870959782E+21
Space diagonal	36427430.837644

Equilateral Triangle

Length = n

Perimeter	63094161
Area	1.9152984884055E+14
Altitude	18213715.418822

Triangular Pyramid

Length = n

Surface area	1.9152984884055E+14
Volume	1.0963204030241E+21
Height	9914290.9103057