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

21139987 (number)

21139987 is an odd 8-digits composite number following 21139986 and preceding 21139988. In scientific notation, it is written as 2.1139987 × 10^7. The sum of its digits is 40. It has a total of 3 prime factors and 8 positive divisors. There are 18698400 positive integers (up to 21139987) that are relatively prime to 21139987.

Interesting facts

21139987 has 8 divisors, whose sum is 23685552
The reverse of 21139987 is 78993112
Previous prime number is 11

Basic properties

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

Name

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

Notation

Scientific notation	2.1139987 × 10^7
Engineering notation	2.1139987 × 10^6

Prime Factorization of 21139987

Prime Factorization 37 × 11 × 51941

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	21139987	Product of the distinct prime numbers

The prime factorization of 21139987 is 37 × 11 × 51941. Since it has a total of 3 prime factors.

Most popular turbo-numbers

3, 9, 93, 32, 201, 852, 9436, 9321, 44305, 16762, 932568, 175168, 1744622, 8332468, 18825447, 67214357, 204238015, 828826464, 4195201679, 6353723055

Basic calculations (n = 21139987)

Multiplication

n×y

n×2	42279974
n×3	63419961
n×4	84559948
n×5	105699935

Division

n÷y

n÷2	10569993.5
n÷3	7046662.3333333
n÷3	5284996.75
n÷5	4227997.4

Exponentiation

n^y

n²	446899050360169
n³	9.4474401149263E+21
n⁴	1.9971876121282E+29
n⁵	4.2220520156951E+36

Nth Root

^y√n

²√n	4597.8241593171
³√n	276.504097813
⁴√n	67.80725742365
⁵√n	29.175677058049

Divisors of 21139987

1, 11, 37, 407, 51941, 571351, 1921817, 21139987

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	-21139986	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 21139987 can be divided by 8 positive divisors. The sum of these divisors (counting 21139987) is 1, the average is 0.125.

Base conversion 21139987

Base	System	Value
2	Binary	1010000101001001000010011
3	Ternary	1110210000121111
4	Quaternary	1100221020103
5	Quinary	20402434422
6	Senary	2033034151
8	Octal	120511023
10	Decimal	21139987
12	Duodecimal	70b5957
16	Hexadecimal	1429213
20	Vigesimal	6c29j7
36	Base36	cl3pv

Cryptographic Hash Functions

md5	fdf918584d2cbc2776abe5ce5a37ff5e
sha1	668f0312df0c3d6e8e83ab57d566dc12f7a43450
sha256	c800b62120d626663c22b32387642c84bb8f0e4c313780ccba14ee98c78cb9d9
sha512	b1ee9b6a43951963eb6063667dcdf66e06780d8a71719e049504ba292608b4da90ac432a757fd49bdcf00ff159e51690995017ff1ba2fd98b17080fe94308fb9
ripemd-160	50504b85106b74672c826f5c232748e83561c782

21139987 as geometric shapes

Circle

Radius = n

Diameter	42279974
Circumference	132826455.71237
Area	1.4039747735078E+15

Sphere

Radius = n

Volume	3.9573344613709E+22
Surface area	5.615899094031E+15
Circumference	132826455.71237

Square

Length = n

Perimeter	84559948
Area	446899050360169
Diagonal	29896456.323791

Cube

Length = n

Surface area	2681394302161014
Volume	9.4474401149263E+21
Space diagonal	36615531.555346

Equilateral Triangle

Length = n

Perimeter	63419961
Area	1.9351296526952E+14
Altitude	18307765.777673

Triangular Pyramid

Length = n

Surface area	1.9351296526952E+14
Volume	1.1133914950197E+21
Height	9965485.4412636