21493731 (number)

21493731 is an odd 8-digits composite number following 21493730 and preceding 21493732. In scientific notation, it is written as 2.1493731 × 10^7. The sum of its digits is 30. It has a total of 5 prime factors and 32 positive divisors. There are 11500704 positive integers (up to 21493731) that are relatively prime to 21493731.

Interesting facts

Basic properties

Name

Name twenty-one million four hundred ninety-three thousand seven hundred thirty-one

Notation

Scientific notation 2.1493731 × 10^7
Engineering notation 2.1493731 × 10^6

Prime Factorization of 21493731

Prime Factorization 3 × 7 × 19 × 103 × 523

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 21493731
Product of the distinct prime numbers

The prime factorization of 21493731 is 3 × 7 × 19 × 103 × 523. Since it has a total of 5 prime factors.

Most popular turbo-numbers

1, 5, 59, 49, 807, 318, 2611, 420, 83938, 84461, 885947, 584262, 241411, 9315093, 70733623, 83297626, 922061457, 101022100, 9293886981, 566808916

Basic calculations (n = 21493731)

Multiplication

n×y
n×2 42987462
n×3 64481193
n×4 85974924
n×5 107468655

Division

n÷y
n÷2 10746865.5
n÷3 7164577
n÷3 5373432.75
n÷5 4298746.2

Exponentiation

ny
n2 461980472300361
n3 9.9296839988769E+21
n4 2.1342595678686E+29
n5 4.5873201035945E+36

Nth Root

y√n
2√n 4636.1331948079
3√n 278.03785951615
4√n 68.089156220414
5√n 29.27267168653

Divisors of 21493731

1, 3, 7, 19, 21, 57, 103, 133, 309, 399, 523, 721, 1569, 1957, 2163, 3661, 5871, 9937, 10983, 13699, 29811, 41097, 53869, 69559, 161607, 208677, 377083, 1023511, 1131249, 3070533, 7164577, 21493731

32 divisors

τ Total Divisors 32
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21493730
Sum of the proper positive divisors of n
A Arithmetic Mean 0.03125
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 32
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21493731 can be divided by 32 positive divisors. The sum of these divisors (counting 21493731) is 1, the average is 0.03125.

Base conversion 21493731

Base System Value
2 Binary 1010001111111011111100011
3 Ternary 1111102222212010
4 Quaternary 1101333133203
5 Quinary 21000244411
6 Senary 2044404003
8 Octal 121773743
10 Decimal 21493731
12 Duodecimal 7246603
16 Hexadecimal 147f7e3
20 Vigesimal 6e6e6b
36 Base36 csoo3

Cryptographic Hash Functions

md5 ffe13f1e42ff78fd9cf3e0560b69bb73
sha1 43286c9a85abefda93db017e880fe73a37d82ba0
sha256 b5eae020299738ae11acd2ed01c15f093c3673fede75d7a1ac8ab5cf5c5a6781
sha512 1be75864a3020518b2037be1fd128440888a336ba3283d5e45d38df7d725874dd59e78717b634fe0521b30d3e404caa6054bd9947560e3cacd0a49fbfde6704d
ripemd-160 89af9e2df1a227e55fb92bf3bfc5fa3fc2de4a8e

21493731 as geometric shapes

Circle

Radius = n
Diameter 42987462
Circumference 135049094.81567
Area 1.4513544578808E+15

Sphere

Radius = n
Volume 4.159336307112E+22
Surface area 5.805417831523E+15
Circumference 135049094.81567

Square

Length = n
Perimeter 85974924
Area 461980472300361
Diagonal 30396725.886199

Cube

Length = n
Surface area 2771882833802166
Volume 9.9296839988769E+21
Space diagonal 37228234.136218

Equilateral Triangle

Length = n
Perimeter 64481193
Area 2.0004341253222E+14
Altitude 18614117.068109

Triangular Pyramid

Length = n
Surface area 2.0004341253222E+14
Volume 1.1702244817742E+21
Height 10132241.962066