161720 is an even 6-digits composite number following 161719
and preceding 161721 . In scientific notation, it is written as 1.61720 × 10^5.
The sum of its digits is 17. It has a total of 6 prime factors and 32 positive divisors.
There are 59520 positive integers (up to 161720) that are relatively prime to 161720.
161720 has 32 divisors, whose sum is 393120
The reverse of 161720 is 027161
Previous prime number is 13
Is Prime? no
Number parity even
Number length 6
Sum of Digits 17
Digital Root 8
Name
one hundred sixty-one thousand seven hundred twenty
Scientific notation
1.61720 × 10^5
Engineering notation
1.61720 × 10^3
Prime Factorization
2 × 2 × 2 × 5 × 13 × 311
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
6
Total number of prime factors
rad
Radical
40430
Product of the distinct prime numbers
The prime factorization of 161720 is 2 × 2 × 2 × 5 × 13 × 311.
Since it has a total of 6 prime factors.
7 , 8 , 52 , 7 , 59 , 886 , 4936 , 9973 , 21386 , 24269 , 539551 , 246671 , 9596396 , 6013326 , 81705946 , 70015169 , 251639322 , 171818837 , 9314913901 , 965923199
n×2
323440
n×3
485160
n×4
646880
n×5
808600
n÷2
80860
n÷3
53906.666666667
n÷3
40430
n÷5
32344
n2
26153358400
n3
4229521120448000
n4
6.8399815559885E+20
n5
1.1061618172345E+26
2 √n
402.14425272531
3 √n
54.482192650396
4 √n
20.053534669113
5 √n
11.009123573005
1 , 2 , 4 , 5 , 8 , 10 , 13 , 20 , 26 , 40 , 52 , 65 , 104 , 130 , 260 , 311 , 520 , 622 , 1244 , 1555 , 2488 , 3110 , 4043 , 6220 , 8086 , 12440 , 16172 , 20215 , 32344 , 40430 , 80860 , 161720
32 divisors
τ
Total Divisors
32
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-161719
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.03125
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
32
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 161720 can be divided by 32 positive divisors.
The sum of these divisors (counting 161720) is 1, the average is 0.03125.
Base
System
Value
2
Binary
100111011110111000
3
Ternary
22012211122
4
Quaternary
213132320
5
Quinary
20133340
6
Senary
3244412
8
Octal
473670
10
Decimal
161720
12
Duodecimal
79708
16
Hexadecimal
277b8
20
Vigesimal
10460
36
Base36
3gs8
md5
2651e30c868e972d001a0404ffc69cd5
sha1
65b2087ce3f7c7a38808cd96118c4587c6219515
sha256
c7ffd6f4ea91fbfa91586964fce733c9dc2812a16af7798a19e885b1b6ca4f82
sha512
cdc79269050943e296fd43a3755764b646ada4c401ad44f1b98dd1874ebaad89494c24d51b781a74b579632a9a9c727211d3be8925777fb6e6506fbef2a04320
ripemd-160
eb2cec40c81b05e5c0105785c5bf472a269476c3
Diameter
323440
Circumference
1016116.7278771
Area
82163198616.141
Volume
1.771657664027E+16
Surface area
328652794464.56
Circumference
1016116.7278771
Perimeter
646880
Area
26153358400
Diagonal
228706.61730698
Surface area
156920150400
Volume
4229521120448000
Space diagonal
280107.25660004
Perimeter
485160
Area
11324736384.34
Altitude
140053.62830002
Surface area
11324736384.34
Volume
4.9845384424008E+14
Height
76235.539102326