161444985 is an odd 9-digits composite number following 161444984
and preceding 161444986 . In scientific notation, it is written as 1.61444985 × 10^8.
The sum of its digits is 42. It has a total of 4 prime factors and 16 positive divisors.
There are 79480512 positive integers (up to 161444985) that are relatively prime to 161444985.
161444985 has 16 divisors, whose sum is 278182464
The reverse of 161444985 is 589444161
Previous prime number is 13
Is Prime? no Number parity odd Number length 9 Sum of Digits 42 Digital Root 6
Name
one hundred sixty-one million four hundred forty-four thousand nine hundred eighty-five
Scientific notation
1.61444985 × 10^8
Engineering notation
1.61444985 × 10^6
Prime Factorization
3 × 5 × 13 × 827923
Composite number
ω Distinct Factors
4 Total number of distinct prime factors
Ω Total Factors
4 Total number of prime factors
rad Radical
161444985 Product of the distinct prime numbers
The prime factorization of 161444985 is 3 × 5 × 13 × 827923.
Since it has a total of 4 prime factors.
2 , 1 , 68 , 70 , 828 , 893 , 6818 , 2129 , 37015 , 79758 , 193881 , 444745 , 9717252 , 5606694 , 6804872 , 83695718 , 151045091 , 850497919 , 3454419571 , 2336744087
n×2
322889970
n×3
484334955
n×4
645779940
n×5
807224925
n÷2
80722492.5
n÷3
53814995
n÷3
40361246.25
n÷5
32288997
n2
26064483181650225
n3
4.2079800962943E+24
n4
6.7935728352653E+32
n5
1.0967882644858E+41
2 √n12706.100306546
3 √n544.51291665855
4 √n112.72133918006
5 √n43.813193719155
1 , 3 , 5 , 13 , 15 , 39 , 65 , 195 , 827923 , 2483769 , 4139615 , 10762999 , 12418845 , 32288997 , 53814995 , 161444985
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
-161444984 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 161444985 can be divided by 16 positive divisors.
The sum of these divisors (counting 161444985) is 1, the average is 0.0625.
Base
System
Value
2
Binary
1001100111110111010001111001
3
Ternary
102020210020212220
4
Quaternary
21213313101321
5
Quinary
312312214420
6
Senary
24004154253
8
Octal
1147672171
10
Decimal
161444985
12
Duodecimal
46098989
16
Hexadecimal
99f7479
20
Vigesimal
2a90c95
36
Base36
2o4bqx
md5
95e0584c3bfbe85399b6da0ca4ff7035
sha1
4bcb1bd5af0c6b0ae0c174ffe028ae1a0930f8f0
sha256
e7fac59fafcca34e577ec33a44ee0eef5d553b1ab513eb7c843dd0f98b35b654
sha512
6606e7877907787d0b94f298efc585491c81363511d13bc24cf4a327f0522f887e818987aa5ad554bc18ec9ca35a97f699f82aef560f100b0f1a073e78f8418d
ripemd-160
dcc95b68ee98cb4997b807c11fecdf8424495cfd
Diameter
322889970
Circumference
1014388757.6698
Area
8.1883988883087E+16
Volume
1.7626345809294E+25
Surface area
3.2753595553235E+17
Circumference
1014388757.6698
Perimeter
645779940
Area
26064483181650225
Diagonal
228317687.36412
Surface area
156386899089901350
Volume
4.2079800962943E+24
Space diagonal
279630916.6472
Perimeter
484334955
Area
1.1286252285911E+16
Altitude
139815458.3236
Surface area
1.1286252285911E+16
Volume
4.9591521019795E+23
Height
76105895.78804