161801972 is an even 9-digits composite number following 161801971
and preceding 161801973 . In scientific notation, it is written as 1.61801972 × 10^8.
The sum of its digits is 35. It has a total of 4 prime factors and 12 positive divisors.
There are 80874360 positive integers (up to 161801972) that are relatively prime to 161801972.
161801972 has 12 divisors, whose sum is 283246656
The reverse of 161801972 is 279108161
Previous prime number is 4691
Is Prime? no
Number parity even
Number length 9
Sum of Digits 35
Digital Root 8
Name
one hundred sixty-one million eight hundred one thousand nine hundred seventy-two
Scientific notation
1.61801972 × 10^8
Engineering notation
1.61801972 × 10^6
Prime Factorization
2 × 2 × 4691 × 8623
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
80900986
Product of the distinct prime numbers
The prime factorization of 161801972 is 2 × 2 × 4691 × 8623.
Since it has a total of 4 prime factors.
1 , 2 , 80 , 46 , 753 , 1000 , 3719 , 1477 , 53213 , 74501 , 444953 , 215885 , 3646345 , 4349204 , 72257574 , 39946906 , 106423356 , 68165845 , 2029398703 , 5267608500
n×2
323603944
n×3
485405916
n×4
647207888
n×5
809009860
n÷2
80900986
n÷3
53933990.666667
n÷3
40450493
n÷5
32360394.4
n2
26179878143088784
n3
4.2359559102715E+24
n4
6.8538601958698E+32
n5
1.108968095504E+41
2 √n
12720.14040803
3 √n
544.91396335647
4 √n
112.78359990721
5 √n
43.832552542838
1 , 2 , 4 , 4691 , 8623 , 9382 , 17246 , 18764 , 34492 , 40450493 , 80900986 , 161801972
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
-161801971
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 161801972 can be divided by 12 positive divisors.
The sum of these divisors (counting 161801972) is 1, the average is 0.083333333333333.
Base
System
Value
2
Binary
1001101001001110011011110100
3
Ternary
102021110101120122
4
Quaternary
21221032123310
5
Quinary
312410130342
6
Senary
24015551112
8
Octal
1151163364
10
Decimal
161801972
12
Duodecimal
4622b498
16
Hexadecimal
9a4e6f4
20
Vigesimal
2ab54ic
36
Base36
2obz78
md5
1534f1369277bd969e0fef66a363c69f
sha1
96f994a5eb75b38086ea4b0643781dbf84fc9b90
sha256
21ca9513f53f76572332f2e481dc44da2fd41b6f077b70defff6132cd6c5ba2b
sha512
8fc7b0135745930fa3421f2aa4f2d382cf3d3a35567027ea3a401175186959e080360d06fd3390f86a92be251157e86c3448883f3bf427105aa8cd532e2b53fd
ripemd-160
792450d7763edb0807df5a67974da8fc6f25cfa0
Diameter
323603944
Circumference
1016631773.1431
Area
8.2246512846204E+16
Volume
1.7743530624852E+25
Surface area
3.2898605138481E+17
Circumference
1016631773.1431
Perimeter
647207888
Area
26179878143088784
Diagonal
228822543.22111
Surface area
157079268858532704
Volume
4.2359559102715E+24
Space diagonal
280249236.26884
Perimeter
485405916
Area
1.1336219769948E+16
Altitude
140124618.13442
Surface area
1.1336219769948E+16
Volume
4.9921219149336E+23
Height
76274181.073704