21031239 is an odd 8-digits composite number following 21031238
and preceding 21031240 . In scientific notation, it is written as 2.1031239 × 10^7.
The sum of its digits is 21. It has a total of 3 prime factors and 8 positive divisors.
There are 14008896 positive integers (up to 21031239) that are relatively prime to 21031239.
21031239 has 8 divisors, whose sum is 28065520
The reverse of 21031239 is 93213012
Previous prime number is 4357
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 21
Digital Root 3
Name
twenty-one million thirty-one thousand two hundred thirty-nine
Scientific notation
2.1031239 × 10^7
Engineering notation
2.1031239 × 10^6
Prime Factorization
3 × 4357 × 1609
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21031239
Product of the distinct prime numbers
The prime factorization of 21031239 is 3 × 4357 × 1609.
Since it has a total of 3 prime factors.
2 , 6 , 23 , 41 , 973 , 387 , 864 , 5798 , 26432 , 24112 , 966575 , 358056 , 292695 , 9278296 , 11593664 , 42554535 , 910915882 , 149728184 , 9713029593 , 3625469388
n×2
42062478
n×3
63093717
n×4
84124956
n×5
105156195
n÷2
10515619.5
n÷3
7010413
n÷3
5257809.75
n÷5
4206247.8
n2
442313013875121
n3
9.302390707618E+21
n4
1.9564080224329E+29
n5
4.1145684701304E+36
2 √n
4585.9828826545
3 √n
276.02915308521
4 √n
67.719885430016
5 √n
29.145598086545
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
-21031238
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 21031239 can be divided by 8 positive divisors.
The sum of these divisors (counting 21031239) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010000001110100101000111
3
Ternary
1110120111102210
4
Quaternary
1100032211013
5
Quinary
20340444424
6
Senary
2030434503
8
Octal
120164507
10
Decimal
21031239
12
Duodecimal
7062a33
16
Hexadecimal
140e947
20
Vigesimal
6b8i1j
36
Base36
cirt3
md5
28be823c19464ab2722a94f659c72448
sha1
01424896827bb0e36e89daa556cb89995b8af39c
sha256
07190ce01a539f68bca089498f9a3915e57d87e73f3981b9700c9730e0853b40
sha512
232b4e0f2b0ac4421f17b0a9ed03d54e9e468b7587b6cad150dbe62ec49c6b460301f899bf8fd2f69468322a68ea775ad08932c0ea3cdd0ec82bb491526733ee
ripemd-160
13e5185301a5094386b4bab337a53d8a9af1d3ae
Diameter
42062478
Circumference
132143171.87658
Area
1.3895673149772E+15
Volume
3.8965763077166E+22
Surface area
5.558269259909E+15
Circumference
132143171.87658
Perimeter
84124956
Area
442313013875121
Diagonal
29742663.42731
Surface area
2653878083250726
Volume
9.302390707618E+21
Space diagonal
36427174.494124
Perimeter
63093717
Area
1.9152715322016E+14
Altitude
18213587.247062
Surface area
1.9152715322016E+14
Volume
1.0962972584339E+21
Height
9914221.1424367