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

21939987 (number)

21939987 is an odd 8-digits composite number following 21939986 and preceding 21939988. In scientific notation, it is written as 2.1939987 × 10^7. The sum of its digits is 48. It has a total of 3 prime factors and 8 positive divisors. There are 14590080 positive integers (up to 21939987) that are relatively prime to 21939987.

Interesting facts

21939987 has 8 divisors, whose sum is 29326480
The reverse of 21939987 is 78993912
Previous prime number is 409

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 48
Digital Root 3

Name

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

Notation

Scientific notation	2.1939987 × 10^7
Engineering notation	2.1939987 × 10^6

Prime Factorization of 21939987

Prime Factorization 3 × 409 × 17881

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	21939987	Product of the distinct prime numbers

The prime factorization of 21939987 is 3 × 409 × 17881. Since it has a total of 3 prime factors.

Most popular turbo-numbers

2, 10, 4, 59, 847, 885, 7159, 2928, 6910, 79943, 280547, 597364, 1548187, 9594082, 74710229, 67199458, 69932131, 494325084, 1619345059, 5599925135

Basic calculations (n = 21939987)

Multiplication

n×y

n×2	43879974
n×3	65819961
n×4	87759948
n×5	109699935

Division

n÷y

n÷2	10969993.5
n÷3	7313329
n÷3	5484996.75
n÷5	4387997.4

Exponentiation

n^y

n²	481363029560169
n³	1.0561098610831E+22
n⁴	2.3171036622734E+29
n⁵	5.0837224227932E+36

Nth Root

^y√n

²√n	4684.0139837537
³√n	279.94891500002
⁴√n	68.439856690043
⁵√n	29.393227305762

Divisors of 21939987

1, 3, 409, 1227, 17881, 53643, 7313329, 21939987

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	-21939986	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 21939987 can be divided by 8 positive divisors. The sum of these divisors (counting 21939987) is 1, the average is 0.125.

Base conversion 21939987

Base	System	Value
2	Binary	1010011101100011100010011
3	Ternary	1112021200000010
4	Quaternary	1103230130103
5	Quinary	21104034422
6	Senary	2102130003
8	Octal	123543423
10	Decimal	21939987
12	Duodecimal	7420903
16	Hexadecimal	14ec713
20	Vigesimal	6h29j7
36	Base36	d2903

Cryptographic Hash Functions

md5	21f4d8be9d4fcc3cf9f57f0c108a4c4a
sha1	cc2815a6322e147d6b9c25b534ea33b07ca9c488
sha256	69da5a259ae6bcb9229360ff845c2d72bd1af133367eed9e5a2d89edcc640467
sha512	d836540dcbae8187663c3634871a2fb3d61cc2a5bc6615c5d3ac1ab924bb0218b96e6a28f037e940c3cc1343ce9f5c6ab98716ed97977f0012ced62ccef55e00
ripemd-160	fa45ddc43758a2ef98137a1c1074057ebe2de4c6

21939987 as geometric shapes

Circle

Radius = n

Diameter	43879974
Circumference	137853003.95811
Area	1.512246557376E+15

Sphere

Radius = n

Volume	4.4238226412831E+22
Surface area	6.0489862295038E+15
Circumference	137853003.95811

Square

Length = n

Perimeter	87759948
Area	481363029560169
Diagonal	31027827.173689

Cube

Length = n

Surface area	2888178177361014
Volume	1.0561098610831E+22
Space diagonal	38001172.201401

Equilateral Triangle

Length = n

Perimeter	65819961
Area	2.0843630602087E+14
Altitude	19000586.1007

Triangular Pyramid

Length = n

Surface area	2.0843630602087E+14
Volume	1.2446374074164E+21
Height	10342609.057896