28920791 is an odd 8-digits composite number following 28920790
and preceding 28920792 . In scientific notation, it is written as 2.8920791 × 10^7.
The sum of its digits is 38. It has a total of 2 prime factors and 4 positive divisors.
There are 26483328 positive integers (up to 28920791) that are relatively prime to 28920791.
28920791 has 4 divisors, whose sum is 28967400
The reverse of 28920791 is 19702982
Previous prime number is 629
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 38
Digital Root 2
Name
twenty-eight million nine hundred twenty thousand seven hundred ninety-one
Scientific notation
2.8920791 × 10^7
Engineering notation
2.8920791 × 10^6
Prime Factorization
629 × 45979
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
28920791
Product of the distinct prime numbers
The prime factorization of 28920791 is 629 × 45979.
Since it has a total of 2 prime factors.
5 , 7 , 76 , 27 , 994 , 759 , 6068 , 885 , 15544 , 39854 , 681845 , 522290 , 2435024 , 4050478 , 67736556 , 15119587 , 528475193 , 122823633 , 4026614911 , 9725127994
n×2
57841582
n×3
86762373
n×4
115683164
n×5
144603955
n÷2
14460395.5
n÷3
9640263.6666667
n÷3
7230197.75
n÷5
5784158.2
n2
836412152065681
n3
2.4189701039752E+22
n4
6.9958528812314E+29
n5
2.0232559904484E+37
2 √n
5377.805407413
3 √n
306.95170895648
4 √n
73.333521716968
5 √n
31.062902491289
4 divisors
τ
Total Divisors
4
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-28920790
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.25
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
4
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 28920791 can be divided by 4 positive divisors.
The sum of these divisors (counting 28920791) is 1, the average is 0.25.
Base
System
Value
2
Binary
1101110010100101111010111
3
Ternary
2000102022212102
4
Quaternary
1232110233113
5
Quinary
24400431131
6
Senary
2511512315
8
Octal
156245727
10
Decimal
28920791
12
Duodecimal
982869b
16
Hexadecimal
1b94bd7
20
Vigesimal
90f1jb
36
Base36
h7vfb
md5
9e48d433c3a2f7c79049a21d0dbccf4a
sha1
bb925da6bde42abebe06473a902fd569fe134db1
sha256
b7442ec5e569d6f575e8b5d3ee815c7731037e746082ef23b639ffa495f78e07
sha512
09c8970a030ab27ce14811fa9b51a3a52bed96966c0ab88da6d1fc9d9729552145d896ae30b5428c3cbef8fb07f0d72e9192df8a5ab3cf150f43ac8bc08a0506
ripemd-160
f1d572cd87ccf5e36d526d0e8b18bcd53c873769
Diameter
57841582
Circumference
181714689.08321
Area
2.6276662723028E+15
Volume
1.0132558277202E+23
Surface area
1.0510665089211E+16
Circumference
181714689.08321
Perimeter
115683164
Area
836412152065681
Diagonal
40900174.866758
Surface area
5018472912394086
Volume
2.4189701039752E+22
Space diagonal
50092279.407081
Perimeter
86762373
Area
3.6217708586145E+14
Altitude
25046139.70354
Surface area
3.6217708586145E+14
Volume
2.8507836066806E+21
Height
13633391.622253