21505972 (number)

21505972 is an even 8-digits composite number following 21505971 and preceding 21505973. In scientific notation, it is written as 2.1505972 × 10^7. The sum of its digits is 31. It has a total of 4 prime factors and 12 positive divisors. There are 10570616 positive integers (up to 21505972) that are relatively prime to 21505972.

Interesting facts

Basic properties

Name

Name twenty-one million five hundred five thousand nine hundred seventy-two

Notation

Scientific notation 2.1505972 × 10^7
Engineering notation 2.1505972 × 10^6

Prime Factorization of 21505972

Prime Factorization 2 × 2 × 59 × 91127

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 10752986
Product of the distinct prime numbers

The prime factorization of 21505972 is 2 × 2 × 59 × 91127. Since it has a total of 4 prime factors.

Most popular turbo-numbers

5, 7, 87, 94, 294, 851, 7295, 3346, 42300, 65710, 622078, 107924, 593570, 7114137, 90652037, 68781363, 242876229, 866967099, 5141077613, 5031368985

Basic calculations (n = 21505972)

Multiplication

n×y
n×2 43011944
n×3 64517916
n×4 86023888
n×5 107529860

Division

n÷y
n÷2 10752986
n÷3 7168657.3333333
n÷3 5376493
n÷5 4301194.4

Exponentiation

ny
n2 462506831664784
n3 9.9466589715916E+21
n4 2.139125693366E+29
n5 4.6003977266009E+36

Nth Root

y√n
2√n 4637.4531803566
3√n 278.09063173355
4√n 68.098848597878
5√n 29.27600517175

Divisors of 21505972

1, 2, 4, 59, 118, 236, 91127, 182254, 364508, 5376493, 10752986, 21505972

12 divisors

τ Total Divisors 12
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21505971
Sum of the proper positive divisors of n
A Arithmetic Mean 0.083333333333333
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 12
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21505972 can be divided by 12 positive divisors. The sum of these divisors (counting 21505972) is 1, the average is 0.083333333333333.

Base conversion 21505972

Base System Value
2 Binary 1010010000010011110110100
3 Ternary 1111110121122111
4 Quaternary 1102002132310
5 Quinary 21001142342
6 Senary 2044540404
8 Octal 122023664
10 Decimal 21505972
12 Duodecimal 7251704
16 Hexadecimal 14827b4
20 Vigesimal 6e84ic
36 Base36 csy44

Cryptographic Hash Functions

md5 d2821c6e45252540d5de6bae61825a15
sha1 fa845d457e2915c6de16003c1851fe9d1ba5e4dc
sha256 5cc6c021658425ed62266d78f5a6ed548978d0c88c0e77d5d131a2d54c2aa9b5
sha512 e9e855ebcf1ed028c3b396e1fd01d0a2df432015fd8fe5a61d72fd46c2c3f0bb613d926343d3f938efed9f1111dd3ae9bfd4ac5ef0b6113ec118374d579abc5c
ripemd-160 c5ceabaec3de67fd0c569b1bb720b7fff619181b

21505972 as geometric shapes

Circle

Radius = n
Diameter 43011944
Circumference 135126007.28702
Area 1.4530080645932E+15

Sphere

Radius = n
Volume 4.1664467670553E+22
Surface area 5.8120322583727E+15
Circumference 135126007.28702

Square

Length = n
Perimeter 86023888
Area 462506831664784
Diagonal 30414037.274416

Cube

Length = n
Surface area 2775040989988704
Volume 9.9466589715916E+21
Space diagonal 37249436.170154

Equilateral Triangle

Length = n
Perimeter 64517916
Area 2.0027133282278E+14
Altitude 18624718.085077

Triangular Pyramid

Length = n
Surface area 2.0027133282278E+14
Volume 1.1722250014937E+21
Height 10138012.424805