21497985 (number)

21497985 is an odd 8-digits composite number following 21497984 and preceding 21497986. In scientific notation, it is written as 2.1497985 × 10^7. The sum of its digits is 45. It has a total of 4 prime factors and 16 positive divisors. There are 10966560 positive integers (up to 21497985) that are relatively prime to 21497985.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.1497985 × 10^7
Engineering notation 2.1497985 × 10^6

Prime Factorization of 21497985

Prime Factorization 15 × 3 × 23 × 20771

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 21497985
Product of the distinct prime numbers

The prime factorization of 21497985 is 15 × 3 × 23 × 20771. Since it has a total of 4 prime factors.

Most popular turbo-numbers

2, 2, 22, 63, 568, 627, 392, 679, 27575, 21656, 68704, 765976, 8369853, 1390300, 64593994, 48660971, 707822521, 407781602, 1214642609, 4439060561

Basic calculations (n = 21497985)

Multiplication

n×y
n×2 42995970
n×3 64493955
n×4 85991940
n×5 107489925

Division

n÷y
n÷2 10748992.5
n÷3 7165995
n÷3 5374496.25
n÷5 4299597

Exponentiation

ny
n2 462163359060225
n3 9.9355809606263E+21
n4 2.1359497045783E+29
n5 4.5918614709779E+36

Nth Root

y√n
2√n 4636.5919596186
3√n 278.05620122134
4√n 68.09252499077
5√n 29.273830313556

Divisors of 21497985

1, 3, 15, 23, 45, 69, 345, 1035, 20771, 62313, 311565, 477733, 934695, 1433199, 7165995, 21497985

16 divisors

τ Total Divisors 16
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21497984
Sum of the proper positive divisors of n
A Arithmetic Mean 0.0625
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 16
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21497985 can be divided by 16 positive divisors. The sum of these divisors (counting 21497985) is 1, the average is 0.0625.

Base conversion 21497985

Base System Value
2 Binary 1010010000000100010000001
3 Ternary 1111110012200200
4 Quaternary 1102000202001
5 Quinary 21000413420
6 Senary 2044435413
8 Octal 122004201
10 Decimal 21497985
12 Duodecimal 7248b69
16 Hexadecimal 1480881
20 Vigesimal 6e74j5
36 Base36 csry9

Cryptographic Hash Functions

md5 894e576319a7b613bb428502751a8562
sha1 542c2dffc6e9276fa6c74d2da28059ad326e8bfe
sha256 05d6f93b6f9d03646d46e8860269403fce68b9b912390935153bd6d565635ea1
sha512 22001acdf1313fe06a49efd5b2aab178c4969bb0a89b9d452a04499b59f388695aeb7b1ae94d8417d5e50508a6e976f060c6f8424bfd99a32de5d0df28831036
ripemd-160 e0d418d9468e5eadcf6d6005f63cd6e51b70f773

21497985 as geometric shapes

Circle

Radius = n
Diameter 42995970
Circumference 135075823.48597
Area 1.451929013582E+15

Sphere

Radius = n
Volume 4.1618064206734E+22
Surface area 5.8077160543279E+15
Circumference 135075823.48597

Square

Length = n
Perimeter 85991940
Area 462163359060225
Diagonal 30402741.950693

Cube

Length = n
Surface area 2772980154361350
Volume 9.9355809606263E+21
Space diagonal 37235602.280354

Equilateral Triangle

Length = n
Perimeter 64493955
Area 2.0012260482225E+14
Altitude 18617801.140177

Triangular Pyramid

Length = n
Surface area 2.0012260482225E+14
Volume 1.1709194453811E+21
Height 10134247.316898