21291237 is an odd 8-digits composite number following 21291236
and preceding 21291238 . In scientific notation, it is written as 2.1291237 × 10^7.
The sum of its digits is 27. It has a total of 3 prime factors and 8 positive divisors.
There are 12903720 positive integers (up to 21291237) that are relatively prime to 21291237.
21291237 has 8 divisors, whose sum is 29248704
The reverse of 21291237 is 73219212
Previous prime number is 3
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 27
Digital Root 9
Name
twenty-one million two hundred ninety-one thousand two hundred thirty-seven
Scientific notation
2.1291237 × 10^7
Engineering notation
2.1291237 × 10^6
Prime Factorization
33 × 3 × 215063
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21291237
Product of the distinct prime numbers
The prime factorization of 21291237 is 33 × 3 × 215063.
Since it has a total of 3 prime factors.
6 , 9 , 6 , 34 , 862 , 351 , 3076 , 7190 , 24859 , 21865 , 369422 , 182319 , 5228994 , 1786926 , 96717101 , 90179464 , 728566141 , 446325674 , 4618590926 , 5796377999
n×2
42582474
n×3
63873711
n×4
85164948
n×5
106456185
n÷2
10645618.5
n÷3
7097079
n÷3
5322809.25
n÷5
4258247.4
n2
453316772990169
n3
9.6516748498089E+21
n4
2.0549609667422E+29
n5
4.3752660968657E+36
2 √n
4614.2428414638
3 √n
277.1619648219
4 √n
67.928218300378
5 √n
29.217306659393
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
-21291236
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 21291237 can be divided by 8 positive divisors.
The sum of these divisors (counting 21291237) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010001001110000011100101
3
Ternary
1111001201002100
4
Quaternary
1101032003211
5
Quinary
20422304422
6
Senary
2040202313
8
Octal
121160345
10
Decimal
21291237
12
Duodecimal
7169399
16
Hexadecimal
144e0e5
20
Vigesimal
6d181h
36
Base36
cocf9
md5
932460e91cd857856877d66af8d0d0b9
sha1
80cdfe143b820c968cf5aae2d8fb2af035383c8e
sha256
0e15cd1bde8b3e1d13af95bdced2c4747efacc64295d0a5c3235811a69862b20
sha512
b5604815c0ba26e5838b74ee9635989135010c0f669561e9a21989dcc595e5bdb0cc67ef099af46afae2a4e00e9df826e9fe2b18862fc64b72ee30470c5bc7be
ripemd-160
7223c69eed6f25d4ed4fb47e64b55b4b86db1c5f
Diameter
42582474
Circumference
133776787.49008
Area
1.4241366437749E+15
Volume
4.0428841070663E+22
Surface area
5.6965465750998E+15
Circumference
133776787.49008
Perimeter
85164948
Area
453316772990169
Diagonal
30110356.1251
Surface area
2719900637941014
Volume
9.6516748498089E+21
Space diagonal
36877504.23999
Perimeter
63873711
Area
1.9629192068553E+14
Altitude
18438752.119995
Surface area
1.9629192068553E+14
Volume
1.1374607893513E+21
Height
10036785.375033