21807 (number)

21807 is an odd 5-digits composite number following 21806 and preceding 21808. In scientific notation, it is written as 2.1807 × 10^4. The sum of its digits is 18. It has a total of 2 prime factors and 4 positive divisors. There are 14532 positive integers (up to 21807) that are relatively prime to 21807.

Interesting facts

Basic properties

Name

Name twenty-one thousand eight hundred seven

Notation

Scientific notation 2.1807 × 10^4
Engineering notation 2.1807 × 10^3

Prime Factorization of 21807

Prime Factorization 9 × 2423

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 21807
Product of the distinct prime numbers

The prime factorization of 21807 is 9 × 2423. Since it has a total of 2 prime factors.

Most popular turbo-numbers

8, 8, 73, 64, 502, 235, 186, 1353, 24846, 67685, 462643, 953114, 7434891, 648306, 84063258, 55981940, 966433092, 865467976, 4153381904, 610907467

Basic calculations (n = 21807)

Multiplication

n×y
n×2 43614
n×3 65421
n×4 87228
n×5 109035

Division

n÷y
n÷2 10903.5
n÷3 7269
n÷3 5451.75
n÷5 4361.4

Exponentiation

ny
n2 475545249
n3 10370215244943
n4 226143283846472001
n5 4.93150659084E+21

Nth Root

y√n
2√n 147.67193369087
3√n 27.938214101231
4√n 12.15203413799
5√n 7.3742725467389

Divisors of 21807

1, 9, 2423, 21807

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 -21806
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 21807 can be divided by 4 positive divisors. The sum of these divisors (counting 21807) is 1, the average is 0.25.

Base conversion 21807

Base System Value
2 Binary 101010100101111
3 Ternary 1002220200
4 Quaternary 11110233
5 Quinary 1144212
6 Senary 244543
8 Octal 52457
10 Decimal 21807
12 Duodecimal 10753
16 Hexadecimal 552f
20 Vigesimal 2ea7
36 Base36 gtr

Cryptographic Hash Functions

md5 949b6216f42ab06201c488deab78781f
sha1 b39b78db5e2ebbf4975d8f99d4b2353e243b7d73
sha256 875aca271ec03882c07ddb0e90e3e29c10f57433d767093f2c696c7bdbffebb3
sha512 d66b9ce4cf6955e53261c35451b5aafb495f7fa1855bb3d51c8e49cbbfcbe019e9a8c87167930d5bfabb8605331108297dd9cdbce0a214961d8be168ca088d69
ripemd-160 817c5c462a6a944d89f2b82848d0108d835db8e8

21807 as geometric shapes

Circle

Radius = n
Diameter 43614
Circumference 137017.42199367
Area 1493969460.7079

Sphere

Radius = n
Volume 43438656039544
Surface area 5975877842.8317
Circumference 137017.42199367

Square

Length = n
Perimeter 87228
Area 475545249
Diagonal 30839.75515467

Cube

Length = n
Surface area 2853271494
Volume 10370215244943
Space diagonal 37770.831960655

Equilateral Triangle

Length = n
Perimeter 65421
Area 205917133.1415
Altitude 18885.415980327

Triangular Pyramid

Length = n
Surface area 205917133.1415
Volume 1222141587010.6
Height 10279.91838489