81938962 is an even 8-digits composite number following 81938961
and preceding 81938963 . In scientific notation, it is written as 8.1938962 × 10^7.
The sum of its digits is 46. It has a total of 4 prime factors and 16 positive divisors.
There are 35038080 positive integers (up to 81938962) that are relatively prime to 81938962.
81938962 has 16 divisors, whose sum is 140781312
The reverse of 81938962 is 26983918
Previous prime number is 463
Is Prime? no
Number parity even
Number length 8
Sum of Digits 46
Digital Root 1
Name
eighty-one million nine hundred thirty-eight thousand nine hundred sixty-two
Scientific notation
8.1938962 × 10^7
Engineering notation
8.1938962 × 10^6
Prime Factorization
2 × 7 × 463 × 12641
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
81938962
Product of the distinct prime numbers
The prime factorization of 81938962 is 2 × 7 × 463 × 12641.
Since it has a total of 4 prime factors.
2 , 9 , 66 , 73 , 178 , 457 , 4046 , 540 , 51557 , 99889 , 729858 , 564051 , 6764993 , 9267369 , 63790884 , 37025597 , 787952865 , 988949468 , 338735516 , 9318896584
n×2
163877924
n×3
245816886
n×4
327755848
n×5
409694810
n÷2
40969481
n÷3
27312987.333333
n÷3
20484740.5
n÷5
16387792.4
n2
6713993493637444
n3
5.5013765774341E+23
n4
4.5077708632606E+31
n5
3.6936206546942E+39
2 √n
9052.014250983
3 √n
434.34032569688
4 √n
95.14207403133
5 √n
38.25587076087
1 , 2 , 7 , 14 , 463 , 926 , 3241 , 6482 , 12641 , 25282 , 88487 , 176974 , 5852783 , 11705566 , 40969481 , 81938962
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
-81938961
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 81938962 can be divided by 16 positive divisors.
The sum of these divisors (counting 81938962) is 1, the average is 0.0625.
Base
System
Value
2
Binary
100111000100100101000010010
3
Ternary
12201011221010101
4
Quaternary
10320210220102
5
Quinary
131434021322
6
Senary
12044123014
8
Octal
470445022
10
Decimal
81938962
12
Duodecimal
2353646a
16
Hexadecimal
4e24a12
20
Vigesimal
15c2782
36
Base36
1cs8ia
md5
deb43495a1de1d1faf99d8ffd3ecf9da
sha1
a4b7c44783a6d7bcbd0aafc8d1f5a80c9667fc34
sha256
cae682ba1ea5e59c29ba84de082e835b65f576c722b659f1eff9ad27506a5863
sha512
c6e936fc79ec95ae5efb56bb61376ae42b8fbd6111930398e77489ec15fd50e9cdab6b65458ec71692756d7bf78e8d41795d56792a5da0b7905857096eea7477
ripemd-160
80dd36eb567c1d3905375017e97acf3291ae3b0a
Diameter
163877924
Circumference
514837682.12395
Area
2.1092632635861E+16
Volume
2.3044112320397E+24
Surface area
8.4370530543444E+16
Circumference
514837682.12395
Perimeter
327755848
Area
6713993493637444
Diagonal
115879191.34717
Surface area
40283960961824664
Volume
5.5013765774341E+23
Space diagonal
141922445.30346
Perimeter
245816886
Area
2.9072444631667E+15
Altitude
70961222.651728
Surface area
2.9072444631667E+15
Volume
6.4834344729408E+22
Height
38626397.115725