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

21505989 (number)

21505989 is an odd 8-digits composite number following 21505988 and preceding 21505990. In scientific notation, it is written as 2.1505989 × 10^7. The sum of its digits is 39. It has a total of 2 prime factors and 4 positive divisors. There are 13713920 positive integers (up to 21505989) that are relatively prime to 21505989.

Interesting facts

21505989 has 4 divisors, whose sum is 21817740
The reverse of 21505989 is 98950512
Previous prime number is 69

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 39
Digital Root 3

Name

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

Notation

Scientific notation	2.1505989 × 10^7
Engineering notation	2.1505989 × 10^6

Prime Factorization of 21505989

Prime Factorization 69 × 311681

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	21505989	Product of the distinct prime numbers

The prime factorization of 21505989 is 69 × 311681. Since it has a total of 2 prime factors.

Most popular turbo-numbers

8, 8, 22, 83, 908, 893, 4567, 3424, 41109, 55526, 852312, 133135, 9887497, 3893526, 37565089, 50039908, 823661667, 245141945, 8513649427, 1002070010

Basic calculations (n = 21505989)

Multiplication

n×y

n×2	43011978
n×3	64517967
n×4	86023956
n×5	107529945

Division

n÷y

n÷2	10752994.5
n÷3	7168663
n÷3	5376497.25
n÷5	4301197.8

Exponentiation

n^y

n²	462507562868121
n³	9.9466825594586E+21
n⁴	2.1391324571021E+29
n⁵	4.600415909198E+36

Nth Root

^y√n

²√n	4637.4550132589
³√n	278.09070500838
⁴√n	68.098862055536
⁵√n	29.276009800157

Divisors of 21505989

1, 69, 311681, 21505989

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	-21505988	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 21505989 can be divided by 4 positive divisors. The sum of these divisors (counting 21505989) is 1, the average is 0.25.

Base conversion 21505989

Base	System	Value
2	Binary	1010010000010011111000101
3	Ternary	1111110121200010
4	Quaternary	1102002133011
5	Quinary	21001142424
6	Senary	2044540433
8	Octal	122023705
10	Decimal	21505989
12	Duodecimal	7251719
16	Hexadecimal	14827c5
20	Vigesimal	6e84j9
36	Base36	csy4l

Cryptographic Hash Functions

md5	c3669dc7e621da28ba1727842b7c1429
sha1	3e21995ab9e970767a2d13bbcdf22ce35f2afda4
sha256	f154925e2062512b749315e247ffadacdce5669e6aea70c1575ec09e3228c415
sha512	e04b85c51fee013b70f21e23a4e883b00c151f1667bd34a1e33347b9af8d0c572e88aa44f1a8f8384188ecef60b9b55b59fcbab12d969fb4cf03e8d8e911c3b2
ripemd-160	2b9ce8a1dc7b7e9f2398726c6de6d7bd5a8e224e

21505989 as geometric shapes

Circle

Radius = n

Diameter	43011978
Circumference	135126114.10117
Area	1.4530103617362E+15

Sphere

Radius = n

Volume	4.166456647518E+22
Surface area	5.8120414469448E+15
Circumference	135126114.10117

Square

Length = n

Perimeter	86023956
Area	462507562868121
Diagonal	30414061.316047

Cube

Length = n

Surface area	2775045377208726
Volume	9.9466825594586E+21
Space diagonal	37249465.615017

Equilateral Triangle

Length = n

Perimeter	64517967
Area	2.0027164944311E+14
Altitude	18624732.807509

Triangular Pyramid

Length = n

Surface area	2.0027164944311E+14
Volume	1.1722277813505E+21
Height	10138020.438682