21255087 is an odd 8-digits composite number following 21255086
and preceding 21255088 . In scientific notation, it is written as 2.1255087 × 10^7.
The sum of its digits is 30. It has a total of 3 prime factors and 8 positive divisors.
There are 12145752 positive integers (up to 21255087) that are relatively prime to 21255087.
21255087 has 8 divisors, whose sum is 32388736
The reverse of 21255087 is 78055212
Previous prime number is 7
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 30
Digital Root 3
Name
twenty-one million two hundred fifty-five thousand eighty-seven
Scientific notation
2.1255087 × 10^7
Engineering notation
2.1255087 × 10^6
Prime Factorization
3 × 7 × 1012147
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21255087
Product of the distinct prime numbers
The prime factorization of 21255087 is 3 × 7 × 1012147.
Since it has a total of 3 prime factors.
6 , 10 , 61 , 90 , 728 , 34 , 5235 , 51 , 16916 , 82264 , 791130 , 596999 , 7372671 , 7075445 , 17421288 , 89218063 , 7276775 , 646745279 , 1634336802 , 2961854991
n×2
42510174
n×3
63765261
n×4
85020348
n×5
106275435
n÷2
10627543.5
n÷3
7085029
n÷3
5313771.75
n÷5
4251017.4
n2
451778723377569
n3
9.6025960701392E+21
n4
2.0410401489667E+29
n5
4.3382485936779E+36
2 √n
4610.3239582485
3 √n
277.00501322453
4 √n
67.899366405354
5 √n
29.207378408703
8 divisors
τ
Total Divisors
8
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21255086
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.125
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
8
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21255087 can be divided by 8 positive divisors.
The sum of these divisors (counting 21255087) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010001000101001110101111
3
Ternary
1110222212111110
4
Quaternary
1101011032233
5
Quinary
20420130322
6
Senary
2035323103
8
Octal
121051657
10
Decimal
21255087
12
Duodecimal
7150493
16
Hexadecimal
14453af
20
Vigesimal
6cghe7
36
Base36
cnkj3
md5
de0760d647f1c36ba9c6b9656dc60dfd
sha1
aa91fc8d4f7f484d596beb6d1fdd00998b9de8d5
sha256
8507590e27f8d52fb5370711fa83be8d46e18084b87c1fe7fd7d8563d70db3b2
sha512
1dd27ef7e45ab46d1257e542450012e2e3bd43494c4a41a166e4e5792e483cbfeac77d55d0bc8d3943815d6f39ecceda0a9b9e8a741f8144abe5eb6955f2c36a
ripemd-160
a64aac5593b80cd1f92e70c61a97c815e0956268
Diameter
42510174
Circumference
133549650.34122
Area
1.4193047184111E+15
Volume
4.0223260359119E+22
Surface area
5.6772188736446E+15
Circumference
133549650.34122
Perimeter
85020348
Area
451778723377569
Diagonal
30059232.30482
Surface area
2710672340265414
Volume
9.6025960701392E+21
Space diagonal
36814890.603297
Perimeter
63765261
Area
1.9562592566714E+14
Altitude
18407445.301648
Surface area
1.9562592566714E+14
Volume
1.1316767996984E+21
Height
10019744.101607