72121531 is an odd 8-digits composite number following 72121530
and preceding 72121532 . In scientific notation, it is written as 7.2121531 × 10^7.
The sum of its digits is 22. It has a total of 3 prime factors and 8 positive divisors.
There are 65024640 positive integers (up to 72121531) that are relatively prime to 72121531.
72121531 has 8 divisors, whose sum is 72990720
The reverse of 72121531 is 13512127
Previous prime number is 107
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 22
Digital Root 4
Name
seventy-two million one hundred twenty-one thousand five hundred thirty-one
Scientific notation
7.2121531 × 10^7
Engineering notation
7.2121531 × 10^6
Prime Factorization
527 × 107 × 1279
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
72121531
Product of the distinct prime numbers
The prime factorization of 72121531 is 527 × 107 × 1279.
Since it has a total of 3 prime factors.
9 , 7 , 97 , 15 , 221 , 282 , 596 , 2705 , 28231 , 19195 , 117140 , 284538 , 7349123 , 2727836 , 48391059 , 5248217 , 360043881 , 762738081 , 9325868435 , 2491065927
n×2
144243062
n×3
216364593
n×4
288486124
n×5
360607655
n÷2
36060765.5
n÷3
24040510.333333
n÷3
18030382.75
n÷5
14424306.2
n2
5201515233783961
n3
3.7514124218032E+23
n4
2.7055760727287E+31
n5
1.9513028860216E+39
2 √n
8492.4396377013
3 √n
416.25070217246
4 √n
92.154433630191
5 √n
37.291769181208
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
-72121530
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 72121531 can be divided by 8 positive divisors.
The sum of these divisors (counting 72121531) is 1, the average is 0.125.
Base
System
Value
2
Binary
100010011000111110010111011
3
Ternary
12000201011010211
4
Quaternary
10103013302323
5
Quinary
121430342111
6
Senary
11053451551
8
Octal
423076273
10
Decimal
72121531
12
Duodecimal
201a0bb7
16
Hexadecimal
44c7cbb
20
Vigesimal
12af3gb
36
Base36
16xtbv
md5
b86b78834a4cabeb213a81e0eed0acec
sha1
c42c3e9f21513a35a1eefa167ce29594802e716f
sha256
49856c0d06582e1268d6c2c7aa02c80a3c155dd5a5fa33d4c8f4cb4f5e39343e
sha512
3cc2a12d3eb91a059aa23e194a25b3900e2cad999c6156c97e59169de26e6f32d235605f168441531f4636a46fcc2a63876165771b7feec6062bcfa5082c109b
ripemd-160
be3323a9bf2262a11d2bb673f152bc2ce498fb87
Diameter
144243062
Circumference
453152943.9105
Area
1.6341042045991E+16
Volume
1.5713879606563E+24
Surface area
6.5364168183964E+16
Circumference
453152943.9105
Perimeter
288486124
Area
5201515233783961
Diagonal
101995247.27931
Surface area
31209091402703766
Volume
3.7514124218032E+23
Space diagonal
124918156.01165
Perimeter
216364593
Area
2.2523221653143E+15
Altitude
62459078.005827
Surface area
2.2523221653143E+15
Volume
4.4210819374742E+22
Height
33998415.759771