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

21681921 (number)

21681921 is an odd 8-digits composite number following 21681920 and preceding 21681922. In scientific notation, it is written as 2.1681921 × 10^7. The sum of its digits is 30. It has a total of 3 prime factors and 8 positive divisors. There are 14419440 positive integers (up to 21681921) that are relatively prime to 21681921.

Interesting facts

21681921 has 8 divisors, whose sum is 28979584
The reverse of 21681921 is 12918612
Previous prime number is 421

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 30
Digital Root 3

Name

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

Notation

Scientific notation	2.1681921 × 10^7
Engineering notation	2.1681921 × 10^6

Prime Factorization of 21681921

Prime Factorization 3 × 421 × 17167

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	21681921	Product of the distinct prime numbers

The prime factorization of 21681921 is 3 × 421 × 17167. Since it has a total of 3 prime factors.

Most popular turbo-numbers

10, 7, 27, 72, 314, 319, 4648, 9127, 65069, 61892, 272266, 883729, 2034832, 9857703, 21921690, 32656271, 763901522, 820652381, 2962688234, 1688105828

Basic calculations (n = 21681921)

Multiplication

n×y

n×2	43363842
n×3	65045763
n×4	86727684
n×5	108409605

Division

n÷y

n÷2	10840960.5
n÷3	7227307
n÷3	5420480.25
n÷5	4336384.2

Exponentiation

n^y

n²	470105698250241
n³	1.0192794611112E+22
n⁴	2.2099936752735E+29
n⁵	4.7916908277779E+36

Nth Root

^y√n

²√n	4656.3849711982
³√n	278.84696325775
⁴√n	68.237709305033
⁵√n	29.323752921795

Divisors of 21681921

1, 3, 421, 1263, 17167, 51501, 7227307, 21681921

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	-21681920	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 21681921 can be divided by 8 positive divisors. The sum of these divisors (counting 21681921) is 1, the average is 0.125.

Base conversion 21681921

Base	System	Value
2	Binary	1010010101101011100000001
3	Ternary	1111210120000010
4	Quaternary	1102231130001
5	Quinary	21022310141
6	Senary	2052415133
8	Octal	122553401
10	Decimal	21681921
12	Duodecimal	73174a9
16	Hexadecimal	14ad701
20	Vigesimal	6fa4g1
36	Base36	cwpvl

Cryptographic Hash Functions

md5	82b73314c690cc90b71271d960935ad8
sha1	2bc58fb2e62522c8d119592c43d3c7cd3b9d9023
sha256	8d5892e992b799d7fe23ed3fa5fe5f3e3ca0ec979b6ff06f7bab9d38877e19f6
sha512	3f0571264ff1e82ce504751472013677f76fe6064af1bcb1b80f68b47dd00083fae3d4bebf56a89d569ce8e2bd39196f583e94ccd845c133bc08eac9811b6308
ripemd-160	a79e1ae0b17c6a675b3435083e373ee8a658c4f6

21681921 as geometric shapes

Circle

Radius = n

Diameter	43363842
Circumference	136231527.45863
Area	1.4768806080337E+15

Sphere

Radius = n

Volume	4.2695478226424E+22
Surface area	5.9075224321346E+15
Circumference	136231527.45863

Square

Length = n

Perimeter	86727684
Area	470105698250241
Diagonal	30662866.736502

Cube

Length = n

Surface area	2820634189501446
Volume	1.0192794611112E+22
Space diagonal	37554188.777695

Equilateral Triangle

Length = n

Perimeter	65045763
Area	2.0356173857427E+14
Altitude	18777094.388847

Triangular Pyramid

Length = n

Surface area	2.0356173857427E+14
Volume	1.2012323647931E+21
Height	10220955.578834