72187891 is an odd 8-digits prime number following 72187890
and preceding 72187892 . In scientific notation, it is written as 7.2187891 × 10^7.
The sum of its digits is 43. It has a total of 1 prime factors and 2 positive divisors.
There are 72187890 positive integers (up to 72187891) that are relatively prime to 72187891.
72187891 has 2 divisors, whose sum is 72187892
The reverse of 72187891 is 19878127
Previous prime number is 1
Is Prime? yes Number parity odd Number length 8 Sum of Digits 43 Digital Root 7
Name
seventy-two million one hundred eighty-seven thousand eight hundred ninety-one
Scientific notation
7.2187891 × 10^7
Engineering notation
7.2187891 × 10^6
Prime Factorization
72187891
Composite number
ω Distinct Factors
1 Total number of distinct prime factors
Ω Total Factors
1 Total number of prime factors
rad Radical
72187891 Product of the distinct prime numbers
The prime factorization of 72187891 is 72187891.
Since it has a total of 1 prime factors.
2 , 4 , 54 , 10 , 396 , 480 , 6547 , 8295 , 45758 , 96062 , 371572 , 765790 , 8190667 , 7542975 , 59890614 , 84353734 , 969769309 , 599920008 , 8328040921 , 1995266913
n×2
144375782
n×3
216563673
n×4
288751564
n×5
360939455
n÷2
36093945.5
n÷3
24062630.333333
n÷3
18046972.75
n÷5
14437578.2
n2
5211091607027881
n3
3.7617771291914E+23
n4
2.7155475736836E+31
n5
1.9602965225439E+39
2 √n8496.3457439066
3 √n416.37832901116
4 √n92.175624456288
5 √n37.298629189518
2 divisors
τ Total Divisors
2 Total number of the positive divisors of n
σ Sum of Divisors
72187892 Sum of all the positive divisors of n
s Aliquot Sum
1 Sum of the proper positive divisors of n
A Arithmetic Mean
36093946 Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G Geometric Mean
8496.3458027554 Returns the nth root of the product of n divisors
H Harmonic Mean
1.9999999722945 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 72187891 can be divided by 2 positive divisors.
The sum of these divisors (counting 72187891) is 72187892, the average is 36093946.
Base
System
Value
2
Binary
100010011010111111111110011
3
Ternary
12000211112011121
4
Quaternary
10103113333303
5
Quinary
121440003031
6
Senary
11055123111
8
Octal
423277763
10
Decimal
72187891
12
Duodecimal
20213497
16
Hexadecimal
44d7ff3
20
Vigesimal
12b39eb
36
Base36
16z8j7
md5
95c22a2373fbec54f3e2510e4781868e
sha1
531138c956f202a98d8792072e0160a1163a18af
sha256
e5d1c705d8811013ed08e564ded12545feb797169f12944bfe87e4c7b789a49d
sha512
a8816f8db3d3734ae4086da930ce17a7734cfd5279e8066be62dd8a6a6ab3d060339a904b82b27000dbaa0fed7775f214ad7d90fc6fc28a1fcaa6c3843420d30
ripemd-160
0f8dbcb066f75efe7121816399458a4c8950c7b9
Diameter
144375782
Circumference
453569896.08748
Area
1.6371127109822E+16
Volume
1.5757295191347E+24
Surface area
6.5484508439289E+16
Circumference
453569896.08748
Perimeter
288751564
Area
5211091607027881
Diagonal
102089094.49131
Surface area
31266549642167286
Volume
3.7617771291914E+23
Space diagonal
125033094.90324
Perimeter
216563673
Area
2.256468856567E+15
Altitude
62516547.451622
Surface area
2.256468856567E+15
Volume
4.4332968622729E+22
Height
34029698.16377