21798981 (number)

21798981 is an odd 8-digits composite number following 21798980 and preceding 21798982. In scientific notation, it is written as 2.1798981 × 10^7. The sum of its digits is 45. It has a total of 6 prime factors and 20 positive divisors. There are 13206144 positive integers (up to 21798981) that are relatively prime to 21798981.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.1798981 × 10^7
Engineering notation 2.1798981 × 10^6

Prime Factorization of 21798981

Prime Factorization 9 × 17 × 29 × 17 × 17 × 17

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 6
Total number of prime factors
rad Radical 4437
Product of the distinct prime numbers

The prime factorization of 21798981 is 9 × 17 × 29 × 17 × 17 × 17. Since it has a total of 6 prime factors.

Most popular turbo-numbers

3, 8, 2, 23, 7, 573, 4708, 9909, 37100, 85736, 470642, 439162, 3289584, 5076857, 12276521, 94647751, 417377192, 10489773, 7436591200, 1210333897

Basic calculations (n = 21798981)

Multiplication

n×y
n×2 43597962
n×3 65396943
n×4 87195924
n×5 108994905

Division

n÷y
n÷2 10899490.5
n÷3 7266327
n÷3 5449745.25
n÷5 4359796.2

Exponentiation

ny
n2 475195572638361
n3 1.0358779259228E+22
n4 2.258108322551E+29
n5 4.9224460419231E+36

Nth Root

y√n
2√n 4668.9378877856
3√n 279.34789145852
4√n 68.329626720666
5√n 29.355348363528

Divisors of 21798981

1, 9, 17, 29, 153, 261, 289, 493, 2601, 4437, 4913, 8381, 44217, 75429, 83521, 142477, 751689, 1282293, 2422109, 21798981

20 divisors

τ Total Divisors 20
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21798980
Sum of the proper positive divisors of n
A Arithmetic Mean 0.05
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 20
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21798981 can be divided by 20 positive divisors. The sum of these divisors (counting 21798981) is 1, the average is 0.05.

Base conversion 21798981

Base System Value
2 Binary 1010011001010000001000101
3 Ternary 1112000111120200
4 Quaternary 1103022001011
5 Quinary 21040031411
6 Senary 2055121113
8 Octal 123120105
10 Decimal 21798981
12 Duodecimal 7373199
16 Hexadecimal 14ca045
20 Vigesimal 6g4h91
36 Base36 cz879

Cryptographic Hash Functions

md5 fa5ead200410bcec58646152ee749d7b
sha1 8c865572e811d498678651d11dd3c66c89d6ac9e
sha256 01e48ec306bf4c143032750b50835375c9f9d4ced6b94f7e2e7c951e9e9fb52b
sha512 ed152b025a810ac4b1036dd6b74f0dd44e3356f9fe49563550daf51026d7c83caa32b51b0e91b1704a8798fa0f3fecb06fc14bb5249411a35d6c95eb02fedb5f
ripemd-160 37a94774be64d1a3e361b8236b10238a9386ee9f

21798981 as geometric shapes

Circle

Radius = n
Diameter 43597962
Circumference 136967037.13069
Area 1.4928709200191E+15

Sphere

Radius = n
Volume 4.3390753094598E+22
Surface area 5.9714836800763E+15
Circumference 136967037.13069

Square

Length = n
Perimeter 87195924
Area 475195572638361
Diagonal 30828414.576113

Cube

Length = n
Surface area 2851173435830166
Volume 1.0358779259228E+22
Space diagonal 37756942.645229

Equilateral Triangle

Length = n
Perimeter 65396943
Area 2.0576571883536E+14
Altitude 18878471.322614

Triangular Pyramid

Length = n
Surface area 2.0576571883536E+14
Volume 1.2207938431691E+21
Height 10276138.192038