81970168 is an even 8-digits composite number following 81970167
and preceding 81970169 . In scientific notation, it is written as 8.1970168 × 10^7.
The sum of its digits is 40. It has a total of 6 prime factors and 32 positive divisors.
There are 34922880 positive integers (up to 81970168) that are relatively prime to 81970168.
81970168 has 32 divisors, whose sum is 176686560
The reverse of 81970168 is 86107918
Previous prime number is 173
Is Prime? no Number parity even Number length 8 Sum of Digits 40 Digital Root 4
Name
eighty-one million nine hundred seventy thousand one hundred sixty-eight
Scientific notation
8.1970168 × 10^7
Engineering notation
8.1970168 × 10^6
Prime Factorization
2 × 2 × 2 × 7 × 173 × 8461
Composite number
ω Distinct Factors
4 Total number of distinct prime factors
Ω Total Factors
6 Total number of prime factors
rad Radical
20492542 Product of the distinct prime numbers
The prime factorization of 81970168 is 2 × 2 × 2 × 7 × 173 × 8461.
Since it has a total of 6 prime factors.
9 , 4 , 91 , 69 , 733 , 825 , 7096 , 8261 , 36648 , 67276 , 635755 , 18036 , 2121014 , 5050643 , 2278042 , 61161147 , 794132421 , 308601521 , 3067996109 , 1638215770
n×2
163940336
n×3
245910504
n×4
327880672
n×5
409850840
n÷2
40985084
n÷3
27323389.333333
n÷3
20492542
n÷5
16394033.6
n2
6719108441948224
n3
5.5076644779671E+23
n4
4.514641825466E+31
n5
3.7006594889327E+39
2 √n9053.7377916527
3 √n434.39545740134
4 √n95.151131320929
5 √n38.258784224387
1 , 2 , 4 , 7 , 8 , 14 , 28 , 56 , 173 , 346 , 692 , 1211 , 1384 , 2422 , 4844 , 8461 , 9688 , 16922 , 33844 , 59227 , 67688 , 118454 , 236908 , 473816 , 1463753 , 2927506 , 5855012 , 10246271 , 11710024 , 20492542 , 40985084 , 81970168
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
-81970167 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 81970168 can be divided by 32 positive divisors.
The sum of these divisors (counting 81970168) is 1, the average is 0.03125.
Base
System
Value
2
Binary
100111000101100001111111000
3
Ternary
12201020111221011
4
Quaternary
10320230033320
5
Quinary
131441021133
6
Senary
12044523304
8
Octal
470541770
10
Decimal
81970168
12
Duodecimal
23550534
16
Hexadecimal
4e2c3f8
20
Vigesimal
15c6588
36
Base36
1cswl4
md5
80e4538b5ef54a2079ce9b585ada2769
sha1
55789c54b2aad592247f3f9a3e16ffdd0c7c8f00
sha256
4eaf020d60b80dd395b64f9d4a51b96bef91642e7e999e207af8652b3704636b
sha512
04111ae5a39d0f8bf338625d7a8bebc4d2dc210ecfea5be5f9d13ee7403c27eab9e8a329c4af342b6c91c26798e20aab5042ae41909bfcf9f870fe4b16376395
ripemd-160
25d1b8e0acff1e1dde9b9763e66ac8dec671b541
Diameter
163940336
Circumference
515033755.20464
Area
2.1108701719898E+16
Volume
2.3070451016559E+24
Surface area
8.4434806879591E+16
Circumference
515033755.20464
Perimeter
327880672
Area
6719108441948224
Diagonal
115923323.2956
Surface area
40314650651689344
Volume
5.5076644779671E+23
Space diagonal
141976495.68096
Perimeter
245910504
Area
2.9094593007548E+15
Altitude
70988247.840478
Surface area
2.9094593007548E+15
Volume
6.4908448347847E+22
Height
38641107.7652