21497978 (number)

21497978 is an even 8-digits composite number following 21497977 and preceding 21497979. In scientific notation, it is written as 2.1497978 × 10^7. The sum of its digits is 47. It has a total of 3 prime factors and 8 positive divisors. There are 10702624 positive integers (up to 21497978) that are relatively prime to 21497978.

Interesting facts

Basic properties

Name

Name twenty-one million four hundred ninety-seven thousand nine hundred seventy-eight

Notation

Scientific notation 2.1497978 × 10^7
Engineering notation 2.1497978 × 10^6

Prime Factorization of 21497978

Prime Factorization 2 × 233 × 46133

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 21497978
Product of the distinct prime numbers

The prime factorization of 21497978 is 2 × 233 × 46133. Since it has a total of 3 prime factors.

Most popular turbo-numbers

Basic calculations (n = 21497978)

Multiplication

n×y
n×2 42995956
n×3 64493934
n×4 85991912
n×5 107489890

Division

n÷y
n÷2 10748989
n÷3 7165992.6666667
n÷3 5374494.5
n÷5 4299595.6

Exponentiation

ny
n2 462163058088484
n3 9.935571255199E+21
n4 2.135946922617E+29
n5 4.5918539951588E+36

Nth Root

y√n
2√n 4636.5912047538
3√n 278.05617104186
4√n 68.092519447835
5√n 29.273828407175

Divisors of 21497978

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 -21497977
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 21497978 can be divided by 8 positive divisors. The sum of these divisors (counting 21497978) is 1, the average is 0.125.

Base conversion 21497978

Base System Value
2 Binary 1010010000000100001111010
3 Ternary 1111110012200102
4 Quaternary 1102000201322
5 Quinary 21000413403
6 Senary 2044435402
8 Octal 122004172
10 Decimal 21497978
12 Duodecimal 7248b62
16 Hexadecimal 148087a
20 Vigesimal 6e74ii
36 Base36 csry2

Cryptographic Hash Functions

md5 1453d9d4d1161c6eba8128d74ecf62ae
sha1 400f713286a2f7f6e004724ad4af43d64dd9058e
sha256 9d6ca0392e2c57c3f1adde9a64fcf2c0ed917290271e8e200b12231f2b78e5bf
sha512 8121975e3e65fcd68dd8ef5c8360aabaef763c6e1e219f315630a2fb6eb483f4eb6a7037f708c0024578d6ff3a225bc707fb5e007a0c44e751d73921618d0714
ripemd-160 ae6fc11933b7d9f869a3204201189678a0fbde9c

21497978 as geometric shapes

Circle

Radius = n
Diameter 42995956
Circumference 135075779.50367
Area 1.4519280680514E+15

Sphere

Radius = n
Volume 4.1618023552735E+22
Surface area 5.8077122722055E+15
Circumference 135075779.50367

Square

Length = n
Perimeter 85991912
Area 462163058088484
Diagonal 30402732.051198

Cube

Length = n
Surface area 2772978348530904
Volume 9.935571255199E+21
Space diagonal 37235590.155998

Equilateral Triangle

Length = n
Perimeter 64493934
Area 2.0012247449767E+14
Altitude 18617795.077999

Triangular Pyramid

Length = n
Surface area 2.0012247449767E+14
Volume 1.1709183015856E+21
Height 10134244.017066