21285645 (number)

21285645 is an odd 8-digits composite number following 21285644 and preceding 21285646. In scientific notation, it is written as 2.1285645 × 10^7. The sum of its digits is 33. It has a total of 5 prime factors and 32 positive divisors. There are 10886400 positive integers (up to 21285645) that are relatively prime to 21285645.

Interesting facts

Basic properties

Name

Name twenty-one million two hundred eighty-five thousand six hundred forty-five

Notation

Scientific notation 2.1285645 × 10^7
Engineering notation 2.1285645 × 10^6

Prime Factorization of 21285645

Prime Factorization 5 × 3 × 43 × 61 × 541

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 21285645
Product of the distinct prime numbers

The prime factorization of 21285645 is 5 × 3 × 43 × 61 × 541. Since it has a total of 5 prime factors.

Most popular turbo-numbers

6, 8, 59, 49, 997, 188, 6921, 9306, 39226, 92184, 286367, 840734, 8991173, 835197, 60013726, 27033664, 691929004, 869115480, 852832665, 4245662213

Basic calculations (n = 21285645)

Multiplication

n×y
n×2 42571290
n×3 63856935
n×4 85142580
n×5 106428225

Division

n÷y
n÷2 10642822.5
n÷3 7095215
n÷3 5321411.25
n÷5 4257129

Exponentiation

ny
n2 453078683066025
n3 9.6440720048109E+21
n4 2.0528029304884E+29
n5 4.3695234433337E+36

Nth Root

y√n
2√n 4613.6368517689
3√n 277.13769778946
4√n 67.923757638759
5√n 29.215771752369

Divisors of 21285645

1, 3, 5, 15, 43, 61, 129, 183, 215, 305, 541, 645, 915, 1623, 2623, 2705, 7869, 8115, 13115, 23263, 33001, 39345, 69789, 99003, 116315, 165005, 348945, 495015, 1419043, 4257129, 7095215, 21285645

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 -21285644
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 21285645 can be divided by 32 positive divisors. The sum of these divisors (counting 21285645) is 1, the average is 0.03125.

Base conversion 21285645

Base System Value
2 Binary 1010001001100101100001101
3 Ternary 1111001102102020
4 Quaternary 1101030230031
5 Quinary 20422120040
6 Senary 2040120353
8 Octal 121145415
10 Decimal 21285645
12 Duodecimal 71660b9
16 Hexadecimal 144cb0d
20 Vigesimal 6d0e25
36 Base36 co83x

Cryptographic Hash Functions

md5 ee69be1edab47ff0d62fafc553b769b2
sha1 4af277fd2c0e73fe2a81bfdf6dbf4097581bcb66
sha256 544bd6f0899091ad8812d086fa7f93fec766cdb9498854aba8fafd3272d1253b
sha512 d1e5c7143e1f90fe096265840bdf77a7299fd037179e0ce5557b870c36fcaf2b7cd2568bd7db6ed84ac0343149e6b8e0bd10dac0e2d605c289fc7dfbcba5ef84
ripemd-160 4c4cab5743601348a2e851b5a620d4ad726f5197

21285645 as geometric shapes

Circle

Radius = n
Diameter 42571290
Circumference 133741651.91784
Area 1.4233886622184E+15

Sphere

Radius = n
Volume 4.0396994348007E+22
Surface area 5.6935546488734E+15
Circumference 133741651.91784

Square

Length = n
Perimeter 85142580
Area 453078683066025
Diagonal 30102447.842859

Cube

Length = n
Surface area 2718472098396150
Volume 9.6440720048109E+21
Space diagonal 36867818.611874

Equilateral Triangle

Length = n
Perimeter 63856935
Area 1.9618882472419E+14
Altitude 18433909.305937

Triangular Pyramid

Length = n
Surface area 1.9618882472419E+14
Volume 1.1365647854755E+21
Height 10034149.280953