21085906 (number)

21085906 is an even 8-digits composite number following 21085905 and preceding 21085907. In scientific notation, it is written as 2.1085906 × 10^7. The sum of its digits is 31. It has a total of 2 prime factors and 4 positive divisors. There are 10542952 positive integers (up to 21085906) that are relatively prime to 21085906.

Interesting facts

Basic properties

Name

Name twenty-one million eighty-five thousand nine hundred six

Notation

Scientific notation 2.1085906 × 10^7
Engineering notation 2.1085906 × 10^6

Prime Factorization of 21085906

Prime Factorization 2 × 10542953

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 21085906
Product of the distinct prime numbers

The prime factorization of 21085906 is 2 × 10542953. Since it has a total of 2 prime factors.

Most popular turbo-numbers

5, 2, 37, 49, 852, 813, 4697, 3168, 85067, 71029, 152023, 862969, 9732074, 268795, 88230115, 39861225, 594673558, 547913238, 8566147600, 2357164494

Basic calculations (n = 21085906)

Multiplication

n×y
n×2 42171812
n×3 63257718
n×4 84343624
n×5 105429530

Division

n÷y
n÷2 10542953
n÷3 7028635.3333333
n÷3 5271476.5
n÷5 4217181.2

Exponentiation

ny
n2 444615431840836
n3 9.3751192019453E+21
n4 1.9768288223101E+29
n5 4.1683226725322E+36

Nth Root

y√n
2√n 4591.9392417583
3√n 276.2681092119
4√n 67.763849077206
5√n 29.160734126661

Divisors of 21085906

1, 2, 10542953, 21085906

4 divisors

τ Total Divisors 4
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21085905
Sum of the proper positive divisors of n
A Arithmetic Mean 0.25
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 4
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21085906 can be divided by 4 positive divisors. The sum of these divisors (counting 21085906) is 1, the average is 0.25.

Base conversion 21085906

Base System Value
2 Binary 1010000011011111011010010
3 Ternary 1110200021102111
4 Quaternary 1100123323102
5 Quinary 20344222111
6 Senary 2031535534
8 Octal 120337322
10 Decimal 21085906
12 Duodecimal 708a5aa
16 Hexadecimal 141bed2
20 Vigesimal 6bfef6
36 Base36 cjxzm

Cryptographic Hash Functions

md5 f833f8164f57bf1988324f70730bf61c
sha1 592f20339db909d60a1b9b77c58e89d986e2662e
sha256 bcc5616a9fff2dbed8806efc98e0bbb53e72aefb9b43edf6412880b5b4dd9877
sha512 c02392b19b04375b399a79d2c4e245c470df651cf9bda0d37d3e96f6b4a8b64badae483ac98fbd5fff6ed58f4a387db9f9f9f5ca66858a27119037bb90aef9e5
ripemd-160 38903f6770ddbc435d901149ab7be017a5ac0e4e

21085906 as geometric shapes

Circle

Radius = n
Diameter 42171812
Circumference 132486654.76777
Area 1.3968005743438E+15

Sphere

Radius = n
Volume 3.9270407481813E+22
Surface area 5.5872022973753E+15
Circumference 132486654.76777

Square

Length = n
Perimeter 84343624
Area 444615431840836
Diagonal 29819974.240124

Cube

Length = n
Surface area 2667692591045016
Volume 9.3751192019453E+21
Space diagonal 36521860.515621

Equilateral Triangle

Length = n
Perimeter 63257718
Area 1.9252412944438E+14
Altitude 18260930.257811

Triangular Pyramid

Length = n
Surface area 1.9252412944438E+14
Volume 1.104868393688E+21
Height 9939991.4133747