161997908 is an even 9-digits composite number following 161997907
and preceding 161997909 . In scientific notation, it is written as 1.61997908 × 10^8.
The sum of its digits is 50. It has a total of 4 prime factors and 12 positive divisors.
There are 79275480 positive integers (up to 161997908) that are relatively prime to 161997908.
161997908 has 12 divisors, whose sum is 289528512
The reverse of 161997908 is 809799161
Previous prime number is 47
Is Prime? no
Number parity even
Number length 9
Sum of Digits 50
Digital Root 5
Name
one hundred sixty-one million nine hundred ninety-seven thousand nine hundred eight
Scientific notation
1.61997908 × 10^8
Engineering notation
1.61997908 × 10^6
Prime Factorization
2 × 2 × 47 × 861691
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
80998954
Product of the distinct prime numbers
The prime factorization of 161997908 is 2 × 2 × 47 × 861691.
Since it has a total of 4 prime factors.
4 , 9 , 27 , 38 , 606 , 887 , 9901 , 1952 , 23295 , 13467 , 264691 , 800935 , 6697901 , 6681424 , 8637506 , 5920127 , 173284286 , 441925147 , 4765665521 , 4846392212
n×2
323995816
n×3
485993724
n×4
647991632
n×5
809989540
n÷2
80998954
n÷3
53999302.666667
n÷3
40499477
n÷5
32399581.6
n2
26243322196376464
n3
4.251363294783E+24
n4
6.8871195990283E+32
n5
1.1156989671884E+41
2 √n
12727.839879571
3 √n
545.13383128628
4 √n
112.81772856945
5 √n
43.843163313339
1 , 2 , 4 , 47 , 94 , 188 , 861691 , 1723382 , 3446764 , 40499477 , 80998954 , 161997908
12 divisors
τ
Total Divisors
12
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-161997907
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.083333333333333
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
12
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 161997908 can be divided by 12 positive divisors.
The sum of these divisors (counting 161997908) is 1, the average is 0.083333333333333.
Base
System
Value
2
Binary
1001101001111110010001010100
3
Ternary
102021211100100112
4
Quaternary
21221332101110
5
Quinary
312432413113
6
Senary
24024102152
8
Octal
1151762124
10
Decimal
161997908
12
Duodecimal
46304958
16
Hexadecimal
9a7e454
20
Vigesimal
2ac9ef8
36
Base36
2og6dw
md5
874eab5603e92555606285accf5ce45e
sha1
f41b74070a80451cac5c713a04efb591aa957800
sha256
bb62e2d5c6fadb583c5b67bdd136d3bfe732cbfed7a40ac98d80187bd6158e15
sha512
9118d1735635deaefaec20a4d26da04c45b674e50f17413276fea9c1809e524c9ed42d552c1ad14b110d7e173b24642f1ca2dc283639c29ce40808dc6654ede1
ripemd-160
5a684ff587ef13ef17454d861d58067787033dc4
Diameter
323995816
Circumference
1017862875.3394
Area
8.2445828217926E+16
Volume
1.7808068926175E+25
Surface area
3.2978331287171E+17
Circumference
1017862875.3394
Perimeter
647991632
Area
26243322196376464
Diagonal
229099638.56967
Surface area
157459933178258784
Volume
4.251363294783E+24
Space diagonal
280588607.37587
Perimeter
485993724
Area
1.1363691850881E+16
Altitude
140294303.68793
Surface area
1.1363691850881E+16
Volume
5.0102796917143E+23
Height
76366546.18989