20172909 is an odd 8-digits composite number following 20172908
and preceding 20172910 . In scientific notation, it is written as 2.0172909 × 10^7.
The sum of its digits is 30. It has a total of 4 prime factors and 16 positive divisors.
There are 12447600 positive integers (up to 20172909) that are relatively prime to 20172909.
20172909 has 16 divisors, whose sum is 28975104
The reverse of 20172909 is 90927102
Previous prime number is 31
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 30
Digital Root 3
Name
twenty million one hundred seventy-two thousand nine hundred nine
Scientific notation
2.0172909 × 10^7
Engineering notation
2.0172909 × 10^6
Prime Factorization
3 × 23 × 31 × 9431
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
20172909
Product of the distinct prime numbers
The prime factorization of 20172909 is 3 × 23 × 31 × 9431.
Since it has a total of 4 prime factors.
3 , 7 , 2 , 20 , 795 , 892 , 3736 , 7169 , 48570 , 97821 , 510489 , 323674 , 1961280 , 2437057 , 62111327 , 32117352 , 121719597 , 865914465 , 2336945480 , 5382514525
n×2
40345818
n×3
60518727
n×4
80691636
n×5
100864545
n÷2
10086454.5
n÷3
6724303
n÷3
5043227.25
n÷5
4034581.8
n2
406946257522281
n3
8.2092898208875E+21
n4
1.6560525651139E+29
n5
3.3407397695259E+36
2 √n
4491.4261654846
3 √n
272.22176352985
4 √n
67.018103266839
5 √n
28.903717634732
1 , 3 , 23 , 31 , 69 , 93 , 713 , 2139 , 9431 , 28293 , 216913 , 292361 , 650739 , 877083 , 6724303 , 20172909
16 divisors
τ
Total Divisors
16
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-20172908
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.0625
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
16
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 20172909 can be divided by 16 positive divisors.
The sum of these divisors (counting 20172909) is 1, the average is 0.0625.
Base
System
Value
2
Binary
1001100111101000001101101
3
Ternary
1101221220000210
4
Quaternary
1030331001231
5
Quinary
20131013114
6
Senary
2000213033
8
Octal
114750155
10
Decimal
20172909
12
Duodecimal
690a179
16
Hexadecimal
133d06d
20
Vigesimal
661c59
36
Base36
c0dil
md5
fb41daacb008ed456d02a926e4edd611
sha1
987efd430a972b956992e083c251c04e5a8259cc
sha256
0657ee8890c1549319c7c50341b7f7ec28454ada9ca8d8538af9b8b5b0889cc5
sha512
469dfb72db1c928e5234d06cf20afb744054be5fc506bc398fac5070f5c6d9ce1e1568999a8e0349ad0f9d318cd10ef801ec67faa1b56189a5f3468bed448522
ripemd-160
f080e3ece7a7dbfd78c257c85c3f9c4c1d01e44c
Diameter
40345818
Circumference
126750125.43187
Area
1.2784593730379E+15
Volume
3.4386992789986E+22
Surface area
5.1138374921514E+15
Circumference
126750125.43187
Perimeter
80691636
Area
406946257522281
Diagonal
28528801.500318
Surface area
2441677545133686
Volume
8.2092898208875E+21
Space diagonal
34940503.324463
Perimeter
60518727
Area
1.7621289849465E+14
Altitude
17470251.662232
Surface area
1.7621289849465E+14
Volume
9.6747408351255E+20
Height
9509600.5001061