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

21681421 (number)

21681421 is an odd 8-digits prime number following 21681420 and preceding 21681422. In scientific notation, it is written as 2.1681421 × 10^7. The sum of its digits is 25. It has a total of 1 prime factors and 2 positive divisors. There are 21681420 positive integers (up to 21681421) that are relatively prime to 21681421.

Interesting facts

21681421 has 2 divisors, whose sum is 21681422
The reverse of 21681421 is 12418612
Previous prime number is 1

Basic properties

Is Prime? yes
Number parity odd
Number length 8
Sum of Digits 25
Digital Root 7

Name

Name	twenty-one million six hundred eighty-one thousand four hundred twenty-one

Notation

Scientific notation	2.1681421 × 10^7
Engineering notation	2.1681421 × 10^6

Prime Factorization of 21681421

Prime Factorization 21681421

Composite number

ω	Distinct Factors	1	Total number of distinct prime factors
Ω	Total Factors	1	Total number of prime factors
rad	Radical	21681421	Product of the distinct prime numbers

The prime factorization of 21681421 is 21681421. Since it has a total of 1 prime factors.

Most popular turbo-numbers

10, 9, 7, 79, 348, 900, 1289, 6108, 55935, 51694, 987883, 385823, 8489631, 8323867, 66290206, 64527604, 612091596, 138403037, 3340622981, 9896689376

Basic calculations (n = 21681421)

Multiplication

n×y

n×2	43362842
n×3	65044263
n×4	86725684
n×5	108407105

Division

n÷y

n÷2	10840710.5
n÷3	7227140.3333333
n÷3	5420355.25
n÷5	4336284.2

Exponentiation

n^y

n²	470084016579241
n³	1.0192089468826E+22
n⁴	2.2097898264327E+29
n⁵	4.7911383548405E+36

Nth Root

^y√n

²√n	4656.3312811698
³√n	278.84481977373
⁴√n	68.237315899512
⁵√n	29.323617675368

Divisors of 21681421

1, 21681421

2 divisors

τ	Total Divisors	2	Total number of the positive divisors of n
σ	Sum of Divisors	21681422	Sum of all the positive divisors of n
s	Aliquot Sum	1	Sum of the proper positive divisors of n
A	Arithmetic Mean	10840711	Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G	Geometric Mean	4656.3313885504	Returns the nth root of the product of n divisors
H	Harmonic Mean	1.9999999077551	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21681421 can be divided by 2 positive divisors. The sum of these divisors (counting 21681421) is 21681422, the average is 10840711.

Base conversion 21681421

Base	System	Value
2	Binary	1010010101101010100001101
3	Ternary	1111210112022121
4	Quaternary	1102231110031
5	Quinary	21022301141
6	Senary	2052412541
8	Octal	122552415
10	Decimal	21681421
12	Duodecimal	7317151
16	Hexadecimal	14ad50d
20	Vigesimal	6fa3b1
36	Base36	cwphp

Cryptographic Hash Functions

md5	9331b63e1133462e879f51c5cf32615c
sha1	642eb13630b6f4d0b8b17eea9514e663c4b88ccf
sha256	71cd13ec9993843039f8b095b9f6553b4feb94ca1bb83a456a2a0f1c3ae0f98a
sha512	b30b4911b66c727dcbf47dd00ab74f7d1db121c8368184568a33df5882e61394ab1ec991293534ce19fa3f00eac615ba0ec802267925a2f6bb78cd1a545c9551
ripemd-160	c1e4ca2fdf0f0f835e9afafc67770bdede4e0120

21681421 as geometric shapes

Circle

Radius = n

Diameter	43362842
Circumference	136228385.86597
Area	1.4768124930553E+15

Sphere

Radius = n

Volume	4.2692524533323E+22
Surface area	5.9072499722213E+15
Circumference	136228385.86597

Square

Length = n

Perimeter	86725684
Area	470084016579241
Diagonal	30662159.629721

Cube

Length = n

Surface area	2820504099475446
Volume	1.0192089468826E+22
Space diagonal	37553322.752291

Equilateral Triangle

Length = n

Perimeter	65044263
Area	2.0355235013532E+14
Altitude	18776661.376145

Triangular Pyramid

Length = n

Surface area	2.0355235013532E+14
Volume	1.2011492629778E+21
Height	10220719.876574