28991107 is an odd 8-digits composite number following 28991106
and preceding 28991108 . In scientific notation, it is written as 2.8991107 × 10^7.
The sum of its digits is 37. It has a total of 2 prime factors and 4 positive divisors.
There are 28055880 positive integers (up to 28991107) that are relatively prime to 28991107.
28991107 has 4 divisors, whose sum is 29926336
The reverse of 28991107 is 70119982
Previous prime number is 31
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 37
Digital Root 1
Name
twenty-eight million nine hundred ninety-one thousand one hundred seven
Scientific notation
2.8991107 × 10^7
Engineering notation
2.8991107 × 10^6
Prime Factorization
31 × 935197
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
28991107
Product of the distinct prime numbers
The prime factorization of 28991107 is 31 × 935197.
Since it has a total of 2 prime factors.
10 , 8 , 57 , 50 , 715 , 68 , 1236 , 7010 , 65608 , 13571 , 670977 , 881091 , 2372827 , 3569167 , 2605209 , 89944335 , 929537872 , 235264695 , 7827556357 , 6222988391
n×2
57982214
n×3
86973321
n×4
115964428
n×5
144955535
n÷2
14495553.5
n÷3
9663702.3333333
n÷3
7247776.75
n÷5
5798221.4
n2
840484285085449
n3
2.4366569840731E+22
n4
7.064138334756E+29
n5
2.0479719032571E+37
2 √n
5384.3390495027
3 √n
307.2002746297
4 √n
73.378055639971
5 √n
31.077992658925
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
-28991106
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 28991107 can be divided by 4 positive divisors.
The sum of these divisors (counting 28991107) is 1, the average is 0.25.
Base
System
Value
2
Binary
1101110100101111010000011
3
Ternary
2000112220022201
4
Quaternary
1232211322003
5
Quinary
24410203412
6
Senary
2513214031
8
Octal
156457203
10
Decimal
28991107
12
Duodecimal
9861317
16
Hexadecimal
1ba5e83
20
Vigesimal
913hf7
36
Base36
h9doj
md5
27d3415e60a5897cb7985fb966646062
sha1
8cbf73e5cf5e2df8160d53246df71b6828c41326
sha256
86aa97db8ac0e602d055158ecaece6a09985c68d4d6f162d5138b89779ab91c5
sha512
ae8da5fd135f81f8011f10f238daeb1ba90db9ce7899af8c7df487c13cddca5454c3bdcb708675c24aa542eb3a37a3814eb9db0f671ebe576bbc028e2015b08b
ripemd-160
67f3705a7a031df1e5d1f97e5490052bd1a1db87
Diameter
57982214
Circumference
182156497.54127
Area
2.6404592554821E+15
Volume
1.020664490731E+23
Surface area
1.0561837021928E+16
Circumference
182156497.54127
Perimeter
115964428
Area
840484285085449
Diagonal
40999616.70761
Surface area
5042905710512694
Volume
2.4366569840731E+22
Space diagonal
50214070.291666
Perimeter
86973321
Area
3.639403711828E+14
Altitude
25107035.145833
Surface area
3.639403711828E+14
Volume
2.8716277947727E+21
Height
13666538.902537