21031855 (number)

21031855 is an odd 8-digits composite number following 21031854 and preceding 21031856. In scientific notation, it is written as 2.1031855 × 10^7. The sum of its digits is 25. It has a total of 2 prime factors and 4 positive divisors. There are 15531168 positive integers (up to 21031855) that are relatively prime to 21031855.

Interesting facts

Basic properties

Name

Name twenty-one million thirty-one thousand eight hundred fifty-five

Notation

Scientific notation 2.1031855 × 10^7
Engineering notation 2.1031855 × 10^6

Prime Factorization of 21031855

Prime Factorization 65 × 323567

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 21031855
Product of the distinct prime numbers

The prime factorization of 21031855 is 65 × 323567. Since it has a total of 2 prime factors.

Most popular turbo-numbers

5, 5, 17, 22, 271, 80, 8901, 8442, 2201, 67047, 944327, 519847, 4859112, 9054660, 82737197, 48697386, 591782835, 613658786, 5474114676, 1278339153

Basic calculations (n = 21031855)

Multiplication

n×y
n×2 42063710
n×3 63095565
n×4 84127420
n×5 105159275

Division

n÷y
n÷2 10515927.5
n÷3 7010618.3333333
n÷3 5257963.75
n÷5 4206371

Exponentiation

ny
n2 442338924741025
n3 9.3032081260092E+21
n4 1.9566372434105E+29
n5 4.1151710791009E+36

Nth Root

y√n
2√n 4586.0500433379
3√n 276.03184800169
4√n 67.720381299413
5√n 29.145768818075

Divisors of 21031855

1, 65, 323567, 21031855

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 -21031854
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 21031855 can be divided by 4 positive divisors. The sum of these divisors (counting 21031855) is 1, the average is 0.25.

Base conversion 21031855

Base System Value
2 Binary 1010000001110101110101111
3 Ternary 1110120112021121
4 Quaternary 1100032232233
5 Quinary 20341004410
6 Senary 2030441411
8 Octal 120165657
10 Decimal 21031855
12 Duodecimal 7063267
16 Hexadecimal 140ebaf
20 Vigesimal 6b8jcf
36 Base36 cisa7

Cryptographic Hash Functions

md5 c48710cf85ad952d444ddf23f6585797
sha1 df84f25640bb8853ea02475e3a901aa8f8145d63
sha256 c9b5118903b0068225cb76e59c39defb40b9a4829500427730854d464092aabf
sha512 dde7727779b3ae6c0cc87820b34061626e8ace15d44f29caa9bd0c393546bb73789723bec226e72e8faeaf994d56af207165aa0f7354f630ed6119829f0b08c6
ripemd-160 e79297394c51dc03ac9e47e90ef466ba5be4870f

21031855 as geometric shapes

Circle

Radius = n
Diameter 42063710
Circumference 132147042.31873
Area 1.3896487163632E+15

Sphere

Radius = n
Volume 3.8969187071316E+22
Surface area 5.5585948654528E+15
Circumference 132147042.31873

Square

Length = n
Perimeter 84127420
Area 442338924741025
Diagonal 29743534.582864

Cube

Length = n
Surface area 2654033548446150
Volume 9.3032081260092E+21
Space diagonal 36428241.437422

Equilateral Triangle

Length = n
Perimeter 63095565
Area 1.9153837295421E+14
Altitude 18214120.718711

Triangular Pyramid

Length = n
Surface area 1.9153837295421E+14
Volume 1.0963935921151E+21
Height 9914511.5276215