21085871 (number)

21085871 is an odd 8-digits composite number following 21085870 and preceding 21085872. In scientific notation, it is written as 2.1085871 × 10^7. The sum of its digits is 32. It has a total of 4 prime factors and 16 positive divisors. There are 19219200 positive integers (up to 21085871) that are relatively prime to 21085871.

Interesting facts

Basic properties

Name

Name twenty-one million eighty-five thousand eight hundred seventy-one

Notation

Scientific notation 2.1085871 × 10^7
Engineering notation 2.1085871 × 10^6

Prime Factorization of 21085871

Prime Factorization 23 × 29 × 101 × 313

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 21085871
Product of the distinct prime numbers

The prime factorization of 21085871 is 23 × 29 × 101 × 313. Since it has a total of 4 prime factors.

Most popular turbo-numbers

6, 4, 5, 46, 962, 638, 3357, 7578, 22498, 58762, 146560, 574734, 4027425, 2335715, 5622029, 18443649, 589334678, 76310055, 2315534357, 7160528434

Basic calculations (n = 21085871)

Multiplication

n×y
n×2 42171742
n×3 63257613
n×4 84343484
n×5 105429355

Division

n÷y
n÷2 10542935.5
n÷3 7028623.6666667
n÷3 5271467.75
n÷5 4217174.2

Exponentiation

ny
n2 444613955828641
n3 9.3750725174024E+21
n4 1.9768156971759E+29
n5 4.1682880781427E+36

Nth Root

y√n
2√n 4591.9354307307
3√n 276.26795635483
4√n 67.763820957283
5√n 29.160724446011

Divisors of 21085871

1, 23, 29, 101, 313, 667, 2323, 2929, 7199, 9077, 31613, 67367, 208771, 727099, 916777, 21085871

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 -21085870
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 21085871 can be divided by 16 positive divisors. The sum of these divisors (counting 21085871) is 1, the average is 0.0625.

Base conversion 21085871

Base System Value
2 Binary 1010000011011111010101111
3 Ternary 1110200021101012
4 Quaternary 1100123322233
5 Quinary 20344221441
6 Senary 2031535435
8 Octal 120337257
10 Decimal 21085871
12 Duodecimal 708a57b
16 Hexadecimal 141beaf
20 Vigesimal 6bfedb
36 Base36 cjxyn

Cryptographic Hash Functions

md5 625507ab447f240e5f26d16f58f775df
sha1 abcfbec3ef1bce9c050348b90547247e3f025c16
sha256 24ce2289bda90cf3fe62aa3c0fd41858505761c3d986c28f1c0a4404e5337d0f
sha512 b946cf946d880679f5f951b5e09444429aaf285ce7b11fba65cfbdaaadca342c680337218923d3a75a5c3c9cf83aca2e6867e892f6c3b7ec29e75205d34c1562
ripemd-160 4c7c1f479d111181c0e3348b3d2469b1088ce1bc

21085871 as geometric shapes

Circle

Radius = n
Diameter 42171742
Circumference 132486434.85628
Area 1.3967959373148E+15

Sphere

Radius = n
Volume 3.9270211930057E+22
Surface area 5.587183749259E+15
Circumference 132486434.85628

Square

Length = n
Perimeter 84343484
Area 444613955828641
Diagonal 29819924.74265

Cube

Length = n
Surface area 2667683734971846
Volume 9.3750725174024E+21
Space diagonal 36521799.893843

Equilateral Triangle

Length = n
Perimeter 63257613
Area 1.9252349031235E+14
Altitude 18260899.946922

Triangular Pyramid

Length = n
Surface area 1.9252349031235E+14
Volume 1.1048628918618E+21
Height 9939974.9142165