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

21279985 (number)

21279985 is an odd 8-digits composite number following 21279984 and preceding 21279986. In scientific notation, it is written as 2.1279985 × 10^7. The sum of its digits is 43. It has a total of 2 prime factors and 4 positive divisors. There are 17023984 positive integers (up to 21279985) that are relatively prime to 21279985.

Interesting facts

21279985 has 4 divisors, whose sum is 25535988
The reverse of 21279985 is 58997212
Previous prime number is 5

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 43
Digital Root 7

Name

Name	twenty-one million two hundred seventy-nine thousand nine hundred eighty-five

Notation

Scientific notation	2.1279985 × 10^7
Engineering notation	2.1279985 × 10^6

Prime Factorization of 21279985

Prime Factorization 5 × 4255997

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	21279985	Product of the distinct prime numbers

The prime factorization of 21279985 is 5 × 4255997. Since it has a total of 2 prime factors.

Most popular turbo-numbers

8, 8, 61, 45, 371, 438, 1150, 1157, 46454, 25942, 414708, 893459, 8224805, 3081936, 78572253, 3289831, 421461551, 197937224, 1599864204, 417149559

Basic calculations (n = 21279985)

Multiplication

n×y

n×2	42559970
n×3	63839955
n×4	85119940
n×5	106399925

Division

n÷y

n÷2	10639992.5
n÷3	7093328.3333333
n÷3	5319996.25
n÷5	4255997

Exponentiation

n^y

n²	452837761600225
n³	9.6363807742864E+21
n⁴	2.050620383311E+29
n⁵	4.3637170997553E+36

Nth Root

^y√n

²√n	4613.0234120368
³√n	277.11313133597
⁴√n	67.919241839385
⁵√n	29.214217851989

Divisors of 21279985

1, 5, 4255997, 21279985

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	-21279984	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 21279985 can be divided by 4 positive divisors. The sum of these divisors (counting 21279985) is 1, the average is 0.25.

Base conversion 21279985

Base	System	Value
2	Binary	1010001001011010011110001
3	Ternary	1111001010122121
4	Quaternary	1101023103301
5	Quinary	20421424420
6	Senary	2040034241
8	Octal	121132361
10	Decimal	21279985
12	Duodecimal	7162981
16	Hexadecimal	144b4f1
20	Vigesimal	6cjjj5
36	Base36	co3qp

Cryptographic Hash Functions

md5	836c428fb856c462520905e4099fdd94
sha1	12db82c79e2ade8264063f5ff151d6be387f5b45
sha256	fe1e63b5023e265472b86e988160351ca410d314b3d7c911d04f5d3476aacd76
sha512	bde2c57406177d994be8c3abfaae3afee6892151528e1fafbb417a6428afdf39a3ad9bd1e28055f3d4d49dea813536b85ecf81bdd465cec2713d62240e67e8fa
ripemd-160	8b1a36ba5eae0bd5d26d24452b203aaa8baa3069

21279985 as geometric shapes

Circle

Radius = n

Diameter	42559970
Circumference	133706089.089
Area	1.4226317851113E+15

Sphere

Radius = n

Volume	4.0364777396923E+22
Surface area	5.6905271404453E+15
Circumference	133706089.089

Square

Length = n

Perimeter	85119940
Area	452837761600225
Diagonal	30094443.394096

Cube

Length = n

Surface area	2717026569601350
Volume	9.6363807742864E+21
Space diagonal	36858015.204304

Equilateral Triangle

Length = n

Perimeter	63839955
Area	1.9608450266934E+14
Altitude	18429007.602152

Triangular Pyramid

Length = n

Surface area	1.9608450266934E+14
Volume	1.1356583652656E+21
Height	10031481.131365