21978840 (number)

21978840 is an even 8-digits composite number following 21978839 and preceding 21978841. In scientific notation, it is written as 2.1978840 × 10^7. The sum of its digits is 39. It has a total of 7 prime factors and 64 positive divisors. There are 5308416 positive integers (up to 21978840) that are relatively prime to 21978840.

Interesting facts

Basic properties

Name

Name twenty-one million nine hundred seventy-eight thousand eight hundred forty

Notation

Scientific notation 2.1978840 × 10^7
Engineering notation 2.1978840 × 10^6

Prime Factorization of 21978840

Prime Factorization 2 × 2 × 2 × 39 × 5 × 73 × 193

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 7
Total number of prime factors
rad Radical 5494710
Product of the distinct prime numbers

The prime factorization of 21978840 is 2 × 2 × 2 × 39 × 5 × 73 × 193. Since it has a total of 7 prime factors.

Most popular turbo-numbers

Basic calculations (n = 21978840)

Multiplication

n×y
n×2 43957680
n×3 65936520
n×4 87915360
n×5 109894200

Division

n÷y
n÷2 10989420
n÷3 7326280
n÷3 5494710
n÷5 4395768

Exponentiation

ny
n2 483069407745600
n3 1.0617305221735E+22
n4 2.3335605269968E+29
n5 5.1288953453179E+36

Nth Root

y√n
2√n 4688.1595535988
3√n 280.11406916932
4√n 68.470136217177
5√n 29.403630292528

Divisors of 21978840

64 divisors

τ Total Divisors 64
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21978839
Sum of the proper positive divisors of n
A Arithmetic Mean 0.015625
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 64
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21978840 can be divided by 64 positive divisors. The sum of these divisors (counting 21978840) is 1, the average is 0.015625.

Base conversion 21978840

Base System Value
2 Binary 1010011110101111011011000
3 Ternary 1112100122022010
4 Quaternary 1103311323120
5 Quinary 21111310330
6 Senary 2103025520
8 Octal 123657330
10 Decimal 21978840
12 Duodecimal 743b2a0
16 Hexadecimal 14f5ed8
20 Vigesimal 6h7720
36 Base36 d32zc

Cryptographic Hash Functions

md5 c19090b8819e600b2d039e742650b255
sha1 3fe4b01c4b6bcb01345faf5285a5e0916e03d6d6
sha256 549d1c80855caf52a0efe149f925eeece6590bf8ef511a5390c0a0aadf9bca17
sha512 cb4eed4d9efbefe524fdd70697888d8c54ff1ebe1736a8e3b4050764a56e2df6020595d194c24476e1d6e4070c73ded76edce4b75f5f4cce6dd735a662b4dd77
ripemd-160 26f0f0cce2d38f855be747e57c4cb4db969ffab6

21978840 as geometric shapes

Circle

Radius = n
Diameter 43957680
Circumference 138097124.55685
Area 1.5176073025475E+15

Sphere

Radius = n
Volume 4.4473664114032E+22
Surface area 6.0704292101902E+15
Circumference 138097124.55685

Square

Length = n
Perimeter 87915360
Area 483069407745600
Diagonal 31082773.613228

Cube

Length = n
Surface area 2898416446473600
Volume 1.0617305221735E+22
Space diagonal 38068467.571427

Equilateral Triangle

Length = n
Perimeter 65936520
Area 2.091751894494E+14
Altitude 19034233.785714

Triangular Pyramid

Length = n
Surface area 2.091751894494E+14
Volume 1.2512614200361E+21
Height 10360924.537743