72390987 is an odd 8-digits composite number following 72390986
and preceding 72390988 . In scientific notation, it is written as 7.2390987 × 10^7.
The sum of its digits is 45. It has a total of 3 prime factors and 8 positive divisors.
There are 48222000 positive integers (up to 72390987) that are relatively prime to 72390987.
72390987 has 8 divisors, whose sum is 80498880
The reverse of 72390987 is 78909327
Previous prime number is 1693
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 45
Digital Root 9
Name
seventy-two million three hundred ninety thousand nine hundred eighty-seven
Scientific notation
7.2390987 × 10^7
Engineering notation
7.2390987 × 10^6
Prime Factorization
9 × 1693 × 4751
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
72390987
Product of the distinct prime numbers
The prime factorization of 72390987 is 9 × 1693 × 4751.
Since it has a total of 3 prime factors.
7 , 2 , 1 , 10 , 305 , 196 , 2915 , 8204 , 38851 , 58486 , 844910 , 316862 , 3897138 , 4388292 , 18356843 , 45825681 , 249738148 , 390390424 , 137537860 , 425796187
n×2
144781974
n×3
217172961
n×4
289563948
n×5
361954935
n÷2
36195493.5
n÷3
24130329
n÷3
18097746.75
n÷5
14478197.4
n2
5240454998834169
n3
3.7936170969469E+23
n4
2.7462368594806E+31
n5
1.9880279679358E+39
2 √n
8508.289311019
3 √n
416.76844795312
4 √n
92.240388718928
5 √n
37.319593070615
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
-72390986
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 72390987 can be divided by 8 positive divisors.
The sum of these divisors (counting 72390987) is 1, the average is 0.125.
Base
System
Value
2
Binary
100010100001001100101001011
3
Ternary
12001012211202200
4
Quaternary
10110021211023
5
Quinary
122013002422
6
Senary
11103331243
8
Octal
424114513
10
Decimal
72390987
12
Duodecimal
202b0b23
16
Hexadecimal
450994b
20
Vigesimal
12c8h97
36
Base36
173l8r
md5
de993a80218fb54bcce938bf27b21b0a
sha1
fb3993819122c41ddaf473f43c1e240337660913
sha256
1170235bcb06f426b2226325568d8d9d9d94ebc6c97fe264a022e6f61fa53dc5
sha512
25da150b13d468c0773404e3cf647cdbe21931511c4475671929147e11868bf9ed7efc7634e6e3781e80f8c75acc2e748dd7b8f72373a9c5553b72336a7d1185
ripemd-160
a61bf6159281d6067c5d51e79b9ffded03699e8a
Diameter
144781974
Circumference
454845985.89063
Area
1.6463374925805E+16
Volume
1.5890666136401E+24
Surface area
6.5853499703221E+16
Circumference
454845985.89063
Perimeter
289563948
Area
5240454998834169
Diagonal
102376315.60897
Surface area
31442729993005014
Volume
3.7936170969469E+23
Space diagonal
125384867.49406
Perimeter
217172961
Area
2.2691835781898E+15
Altitude
62692433.747029
Surface area
2.2691835781898E+15
Volume
4.4708206241273E+22
Height
34125438.536325