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

21497981 (number)

21497981 is an odd 8-digits composite number following 21497980 and preceding 21497982. In scientific notation, it is written as 2.1497981 × 10^7. The sum of its digits is 41. It has a total of 2 prime factors and 4 positive divisors. There are 20973600 positive integers (up to 21497981) that are relatively prime to 21497981.

Interesting facts

21497981 has 4 divisors, whose sum is 22022364
The reverse of 21497981 is 18979412
Previous prime number is 41

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 41
Digital Root 5

Name

Name	twenty-one million four hundred ninety-seven thousand nine hundred eighty-one

Notation

Scientific notation	2.1497981 × 10^7
Engineering notation	2.1497981 × 10^6

Prime Factorization of 21497981

Prime Factorization 41 × 524341

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	21497981	Product of the distinct prime numbers

The prime factorization of 21497981 is 41 × 524341. Since it has a total of 2 prime factors.

Most popular turbo-numbers

7, 8, 8, 44, 243, 178, 3074, 8504, 28066, 6434, 982288, 549319, 9652683, 123582, 833477, 13115298, 476899851, 851575749, 6913330287, 2105538313

Basic calculations (n = 21497981)

Multiplication

n×y

n×2	42995962
n×3	64493943
n×4	85991924
n×5	107489905

Division

n÷y

n÷2	10748990.5
n÷3	7165993.6666667
n÷3	5374495.25
n÷5	4299596.2

Exponentiation

n^y

n²	462163187076361
n³	9.9355754146671E+21
n⁴	2.1359481148858E+29
n⁵	4.5918571990801E+36

Nth Root

^y√n

²√n	4636.5915282673
³√n	278.05618397592
⁴√n	68.092521823379
⁵√n	29.273829224195

Divisors of 21497981

1, 41, 524341, 21497981

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	-21497980	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 21497981 can be divided by 4 positive divisors. The sum of these divisors (counting 21497981) is 1, the average is 0.25.

Base conversion 21497981

Base	System	Value
2	Binary	1010010000000100001111101
3	Ternary	1111110012200112
4	Quaternary	1102000201331
5	Quinary	21000413411
6	Senary	2044435405
8	Octal	122004175
10	Decimal	21497981
12	Duodecimal	7248b65
16	Hexadecimal	148087d
20	Vigesimal	6e74j1
36	Base36	csry5

Cryptographic Hash Functions

md5	1cc1f8b17b462c7f6bef0c7e1edc1a29
sha1	3a13663f2f42a8563aa6b597add7bc6faf0a9121
sha256	bb50b978012ed724520f6b11b0ae060c80a901a4e2e68f2def74cd42bcddcac5
sha512	a2de6f2ee462015f01537fa73e4f4be5959cadfa60ca3cd8e52f9efc004eb932373dab60847f6c0a00acf99b82e2f473671f6606ad02591be9d8a30ef73dabf4
ripemd-160	99be9b387a1e195525e7fbfc006bf3ed83ad91c3

21497981 as geometric shapes

Circle

Radius = n

Diameter	42995962
Circumference	135075798.35323
Area	1.4519284732787E+15

Sphere

Radius = n

Volume	4.1618040975874E+22
Surface area	5.807713893115E+15
Circumference	135075798.35323

Square

Length = n

Perimeter	85991924
Area	462163187076361
Diagonal	30402736.293839

Cube

Length = n

Surface area	2772979122458166
Volume	9.9355754146671E+21
Space diagonal	37235595.35215

Equilateral Triangle

Length = n

Perimeter	64493943
Area	2.0012253035105E+14
Altitude	18617797.676075

Triangular Pyramid

Length = n

Surface area	2.0012253035105E+14
Volume	1.1709187917836E+21
Height	10134245.43128