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

21087989 (number)

21087989 is an odd 8-digits composite number following 21087988 and preceding 21087990. In scientific notation, it is written as 2.1087989 × 10^7. The sum of its digits is 44. It has a total of 3 prime factors and 6 positive divisors. There are 19465680 positive integers (up to 21087989) that are relatively prime to 21087989.

Interesting facts

21087989 has 6 divisors, whose sum is 22835106
The reverse of 21087989 is 98978012
Previous prime number is 13

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 44
Digital Root 8

Name

Name	twenty-one million eighty-seven thousand nine hundred eighty-nine

Notation

Scientific notation	2.1087989 × 10^7
Engineering notation	2.1087989 × 10^6

Prime Factorization of 21087989

Prime Factorization 13 × 13 × 124781

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	1622153	Product of the distinct prime numbers

The prime factorization of 21087989 is 13 × 13 × 124781. Since it has a total of 3 prime factors.

Most popular turbo-numbers

6, 4, 67, 52, 449, 413, 8420, 558, 77332, 33181, 954833, 835956, 8906896, 2916575, 40105388, 91554565, 463084596, 154293677, 2359492137, 5499484757

Basic calculations (n = 21087989)

Multiplication

n×y

n×2	42175978
n×3	63263967
n×4	84351956
n×5	105439945

Division

n÷y

n÷2	10543994.5
n÷3	7029329.6666667
n÷3	5271997.25
n÷5	4217597.8

Exponentiation

n^y

n²	444703280064121
n³	9.3778978782561E+21
n⁴	1.9776100729979E+29
n⁵	4.1703819465668E+36

Nth Root

^y√n

²√n	4592.1660466494
³√n	276.27720608642
⁴√n	67.76552255129
⁵√n	29.16131024048

Divisors of 21087989

1, 13, 169, 124781, 1622153, 21087989

6 divisors

τ	Total Divisors	6	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-21087988	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.16666666666667	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	6	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21087989 can be divided by 6 positive divisors. The sum of these divisors (counting 21087989) is 1, the average is 0.16666666666667.

Base conversion 21087989

Base	System	Value
2	Binary	1010000011100011011110101
3	Ternary	1110200101021122
4	Quaternary	1100130123311
5	Quinary	20344303424
6	Senary	2031553325
8	Octal	120343365
10	Decimal	21087989
12	Duodecimal	708b845
16	Hexadecimal	141c6f5
20	Vigesimal	6bfjj9
36	Base36	cjzlh

Cryptographic Hash Functions

md5	696f5d047c134d1f577552ef05ad245c
sha1	ad20149dc7da2bac1b37b5ad79856f4ddc40aa71
sha256	d65fb57b5ec2bfb176be2bb531d82e4805eb03df8e2e665f1b33e04b8bd6aea6
sha512	17837f6725db77340d1ed40978d4701507d7c66afed0e8f46cb9d9ca145e3979bacc6d9ff04f399087af8af22d6fa610a0fccd06795ecffbd1647063fcf55d49
ripemd-160	d1a2215f7591d7313e1ec6ff00b0cbe127e7b8b3

21087989 as geometric shapes

Circle

Radius = n

Diameter	42175978
Circumference	132499742.64276
Area	1.3970765576767E+15

Sphere

Radius = n

Volume	3.9282046773926E+22
Surface area	5.5883062307069E+15
Circumference	132499742.64276

Square

Length = n

Perimeter	84351956
Area	444703280064121
Diagonal	29822920.046975

Cube

Length = n

Surface area	2668219680384726
Volume	9.3778978782561E+21
Space diagonal	36525468.377454

Equilateral Triangle

Length = n

Perimeter	63263967
Area	1.925621688409E+14
Altitude	18262734.188727

Triangular Pyramid

Length = n

Surface area	1.925621688409E+14
Volume	1.1051958638316E+21
Height	9940973.3489915