21000728 (number)

21000728 is an even 8-digits composite number following 21000727 and preceding 21000729. In scientific notation, it is written as 2.1000728 × 10^7. The sum of its digits is 20. It has a total of 7 prime factors and 64 positive divisors. There are 8611200 positive integers (up to 21000728) that are relatively prime to 21000728.

Interesting facts

Basic properties

Name

Name twenty-one million seven hundred twenty-eight

Notation

Scientific notation 2.1000728 × 10^7
Engineering notation 2.1000728 × 10^6

Prime Factorization of 21000728

Prime Factorization 2 × 2 × 2 × 7 × 47 × 79 × 101

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 7
Total number of prime factors
rad Radical 5250182
Product of the distinct prime numbers

The prime factorization of 21000728 is 2 × 2 × 2 × 7 × 47 × 79 × 101. Since it has a total of 7 prime factors.

Most popular turbo-numbers

10, 9, 55, 47, 502, 37, 2632, 2519, 72494, 90120, 515793, 333076, 77130, 9024764, 5711584, 59556604, 952730484, 892798529, 7967628840, 8381798924

Basic calculations (n = 21000728)

Multiplication

n×y
n×2 42001456
n×3 63002184
n×4 84002912
n×5 105003640

Division

n÷y
n÷2 10500364
n÷3 7000242.6666667
n÷3 5250182
n÷5 4200145.6

Exponentiation

ny
n2 441030576529984
n3 9.2619631773894E+21
n4 1.9450796943437E+29
n5 4.0848089599235E+36

Nth Root

y√n
2√n 4582.6551255795
3√n 275.89560569143
4√n 67.695310957108
5√n 29.13713659904

Divisors of 21000728

1, 2, 4, 7, 8, 14, 28, 47, 56, 79, 94, 101, 158, 188, 202, 316, 329, 376, 404, 553, 632, 658, 707, 808, 1106, 1316, 1414, 2212, 2632, 2828, 3713, 4424, 4747, 5656, 7426, 7979, 9494, 14852, 15958, 18988, 25991, 29704, 31916, 33229, 37976, 51982, 55853, 63832, 66458, 103964, 111706, 132916, 207928, 223412, 265832, 375013, 446824, 750026, 1500052, 2625091, 3000104, 5250182, 10500364, 21000728

64 divisors

τ Total Divisors 64
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21000727
Sum of the proper positive divisors of n
A Arithmetic Mean 0.015625
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 64
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21000728 can be divided by 64 positive divisors. The sum of these divisors (counting 21000728) is 1, the average is 0.015625.

Base conversion 21000728

Base System Value
2 Binary 1010000000111001000011000
3 Ternary 1110111221120202
4 Quaternary 1100013020120
5 Quinary 20334010403
6 Senary 2030041332
8 Octal 120071030
10 Decimal 21000728
12 Duodecimal 7049248
16 Hexadecimal 1407218
20 Vigesimal 6b51g8
36 Base36 ci49k

Cryptographic Hash Functions

md5 ad1f1f93dc7aa053193c7b54af9b6214
sha1 e1cd8813097d24808f57bd66a579762a5b46097a
sha256 62d869dce77f322e72929ff01b781da26956a2fde76110f54987cd353ad60055
sha512 f7888755d88814401d536f3507324d06c431575786e145d07b085df8415be2554514780eafaee88463d8c51df007d0a7a17202c7f068fb9478b4efeadb861ea1
ripemd-160 10fbcfc4f530c5acf57ce320921ca0f7b5dfd564

21000728 as geometric shapes

Circle

Radius = n
Diameter 42001456
Circumference 131951465.60967
Area 1.3855384192351E+15

Sphere

Radius = n
Volume 3.8796420634541E+22
Surface area 5.5421536769403E+15
Circumference 131951465.60967

Square

Length = n
Perimeter 84002912
Area 441030576529984
Diagonal 29699514.357308

Cube

Length = n
Surface area 2646183459179904
Volume 9.2619631773894E+21
Space diagonal 36374327.891934

Equilateral Triangle

Length = n
Perimeter 63002184
Area 1.9097184156033E+14
Altitude 18187163.945967

Triangular Pyramid

Length = n
Surface area 1.9097184156033E+14
Volume 1.0915328283054E+21
Height 9899838.1191028