21987357 (number)

21987357 is an odd 8-digits composite number following 21987356 and preceding 21987358. In scientific notation, it is written as 2.1987357 × 10^7. The sum of its digits is 42. It has a total of 3 prime factors and 8 positive divisors. There are 12257280 positive integers (up to 21987357) that are relatively prime to 21987357.

Interesting facts

Basic properties

Name

Name twenty-one million nine hundred eighty-seven thousand three hundred fifty-seven

Notation

Scientific notation 2.1987357 × 10^7
Engineering notation 2.1987357 × 10^6

Prime Factorization of 21987357

Prime Factorization 123 × 7 × 25537

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 21987357
Product of the distinct prime numbers

The prime factorization of 21987357 is 123 × 7 × 25537. Since it has a total of 3 prime factors.

Most popular turbo-numbers

Basic calculations (n = 21987357)

Multiplication

n×y
n×2 43974714
n×3 65962071
n×4 87949428
n×5 109936785

Division

n÷y
n÷2 10993678.5
n÷3 7329119
n÷3 5496839.25
n÷5 4397471.4

Exponentiation

ny
n2 483443867845449
n3 1.0629652911779E+22
n4 2.3371797335737E+29
n5 5.1388405175249E+36

Nth Root

y√n
2√n 4689.0678178077
3√n 280.1502467448
4√n 68.476768453306
5√n 29.405908774109

Divisors of 21987357

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 -21987356
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 21987357 can be divided by 8 positive divisors. The sum of these divisors (counting 21987357) is 1, the average is 0.125.

Base conversion 21987357

Base System Value
2 Binary 1010011111000000000011101
3 Ternary 1112101001222120
4 Quaternary 1103320000131
5 Quinary 21112043412
6 Senary 2103133153
8 Octal 123700035
10 Decimal 21987357
12 Duodecimal 74441b9
16 Hexadecimal 14f801d
20 Vigesimal 6h887h
36 Base36 d39jx

Cryptographic Hash Functions

md5 8971285856614b31e6231429f36dcb88
sha1 c7ed7dd4734fcec3daa137c94d0778a6e20a2d4a
sha256 ffc1ff78d61cdadf45ee05655209fda93ac530e850d19c160f93c836be7c5db5
sha512 5ca02e82cad1035b1371ec52bb1ec8693322a2a76563901041a67ef16eb7e6378b97de003ee3fc2b5e14abe9098d5446530bb1a5421be49dc3ad38af0faa415f
ripemd-160 eda1f48d2c943fe4b10a95186ddffd5d99df5a12

21987357 as geometric shapes

Circle

Radius = n
Diameter 43974714
Circumference 138150638.44611
Area 1.5187837036463E+15

Sphere

Radius = n
Volume 4.4525385997138E+22
Surface area 6.0751348145852E+15
Circumference 138150638.44611

Square

Length = n
Perimeter 87949428
Area 483443867845449
Diagonal 31094818.470139

Cube

Length = n
Surface area 2900663207072694
Volume 1.0629652911779E+22
Space diagonal 38083219.448155

Equilateral Triangle

Length = n
Perimeter 65962071
Area 2.0933733542898E+14
Altitude 19041609.724078

Triangular Pyramid

Length = n
Surface area 2.0933733542898E+14
Volume 1.252716609263E+21
Height 10364939.490046