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

21087985 (number)

21087985 is an odd 8-digits composite number following 21087984 and preceding 21087986. In scientific notation, it is written as 2.1087985 × 10^7. The sum of its digits is 40. It has a total of 2 prime factors and 4 positive divisors. There are 16870384 positive integers (up to 21087985) that are relatively prime to 21087985.

Interesting facts

21087985 has 4 divisors, whose sum is 25305588
The reverse of 21087985 is 58978012
Previous prime number is 5

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 40
Digital Root 4

Name

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

Notation

Scientific notation	2.1087985 × 10^7
Engineering notation	2.1087985 × 10^6

Prime Factorization of 21087985

Prime Factorization 5 × 4217597

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	21087985	Product of the distinct prime numbers

The prime factorization of 21087985 is 5 × 4217597. Since it has a total of 2 prime factors.

Most popular turbo-numbers

6, 9, 69, 80, 642, 810, 1718, 2751, 91487, 70966, 409232, 585510, 9370055, 2117895, 13998439, 99110616, 410812149, 986173667, 79600418, 4756268980

Basic calculations (n = 21087985)

Multiplication

n×y

n×2	42175970
n×3	63263955
n×4	84351940
n×5	105439925

Division

n÷y

n÷2	10543992.5
n÷3	7029328.3333333
n÷3	5271996.25
n÷5	4217597

Exponentiation

n^y

n²	444703111360225
n³	9.3778925418178E+21
n⁴	1.9776085725346E+29
n⁵	4.1703779913482E+36

Nth Root

^y√n

²√n	4592.1656111251
³√n	276.2771886182
⁴√n	67.765519337825
⁵√n	29.161309134208

Divisors of 21087985

1, 5, 4217597, 21087985

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	-21087984	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 21087985 can be divided by 4 positive divisors. The sum of these divisors (counting 21087985) is 1, the average is 0.25.

Base conversion 21087985

Base	System	Value
2	Binary	1010000011100011011110001
3	Ternary	1110200101021111
4	Quaternary	1100130123301
5	Quinary	20344303420
6	Senary	2031553321
8	Octal	120343361
10	Decimal	21087985
12	Duodecimal	708b841
16	Hexadecimal	141c6f1
20	Vigesimal	6bfjj5
36	Base36	cjzld

Cryptographic Hash Functions

md5	1d694e9a937f46f328fdb5d26c4138d4
sha1	2ecf48cb756adfc0c9827e08c0f427bdb6b70884
sha256	750b4b1f12e09f1f5e1c682cbce3aedd7b6fcc9cf52069e2c5d09953dfb1dba0
sha512	a2384a6ee00ae1123e68d7f66a84a40b50a8415a35dac5eaae91f62abbdd3853a0af17dd8402ffa218a36eca46651a1e491c9ea1132263fcfd375a288f3ca5d0
ripemd-160	b01d7829ab90cea7fad096f5cc9a1dfb7f3fd4cc

21087985 as geometric shapes

Circle

Radius = n

Diameter	42175970
Circumference	132499717.51002
Area	1.3970760276778E+15

Sphere

Radius = n

Volume	3.9282024420706E+22
Surface area	5.5883041107112E+15
Circumference	132499717.51002

Square

Length = n

Perimeter	84351940
Area	444703111360225
Diagonal	29822914.39012

Cube

Length = n

Surface area	2668218668161350
Volume	9.3778925418178E+21
Space diagonal	36525461.44925

Equilateral Triangle

Length = n

Perimeter	63263955
Area	1.9256209578997E+14
Altitude	18262730.724625

Triangular Pyramid

Length = n

Surface area	1.9256209578997E+14
Volume	1.1051952349263E+21
Height	9940971.4633735