78661640 is an even 8-digits composite number following 78661639
and preceding 78661641 . In scientific notation, it is written as 7.8661640 × 10^7.
The sum of its digits is 38. It has a total of 6 prime factors and 32 positive divisors.
There are 31417344 positive integers (up to 78661640) that are relatively prime to 78661640.
78661640 has 32 divisors, whose sum is 177255000
The reverse of 78661640 is 04616687
Previous prime number is 1009
Is Prime? no Number parity even Number length 8 Sum of Digits 38 Digital Root 2
Name
seventy-eight million six hundred sixty-one thousand six hundred forty
Scientific notation
7.8661640 × 10^7
Engineering notation
7.8661640 × 10^6
Prime Factorization
2 × 2 × 2 × 5 × 1009 × 1949
Composite number
ω Distinct Factors
4 Total number of distinct prime factors
Ω Total Factors
6 Total number of prime factors
rad Radical
19665410 Product of the distinct prime numbers
The prime factorization of 78661640 is 2 × 2 × 2 × 5 × 1009 × 1949.
Since it has a total of 6 prime factors.
4 , 9 , 30 , 45 , 492 , 476 , 2825 , 8523 , 61634 , 79726 , 671792 , 700302 , 1068288 , 3202533 , 45262421 , 49721440 , 101949484 , 110243019 , 4328107140 , 4500580216
n×2
157323280
n×3
235984920
n×4
314646560
n×5
393308200
n÷2
39330820
n÷3
26220546.666667
n÷3
19665410
n÷5
15732328
n2
6187653607489600
n3
4.8673098051705E+23
n4
3.8287057166279E+31
n5
3.0117227074733E+39
2 √n8869.139755354
3 √n428.47057161082
4 √n94.176110321854
5 √n37.944828942016
1 , 2 , 4 , 5 , 8 , 10 , 20 , 40 , 1009 , 1949 , 2018 , 3898 , 4036 , 5045 , 7796 , 8072 , 9745 , 10090 , 15592 , 19490 , 20180 , 38980 , 40360 , 77960 , 1966541 , 3933082 , 7866164 , 9832705 , 15732328 , 19665410 , 39330820 , 78661640
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
-78661639 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 78661640 can be divided by 32 positive divisors.
The sum of these divisors (counting 78661640) is 1, the average is 0.03125.
Base
System
Value
2
Binary
100101100000100100000001000
3
Ternary
12111000102111002
4
Quaternary
10230010200020
5
Quinary
130114133030
6
Senary
11445554132
8
Octal
454044010
10
Decimal
78661640
12
Duodecimal
22415948
16
Hexadecimal
4b04808
20
Vigesimal
14bce20
36
Base36
1atzpk
md5
6e4f159fcf7d1c26e7d27d5c77050e21
sha1
834584b964f2de4d1944277070b6adf38ca8da3d
sha256
dcdc561e745e6293e777917d8fa39676919ad0f7d1e77da7869f15f0065dec94
sha512
4438b5a630858a79182fdceaec6440ceae2af831845b7b96a8632426a32282a65fa57350e24776f50ec7282421905818b60481f7135bc448d75e6e23d8792fca
ripemd-160
701c1075d3857a1dedb62a76d9f1770b53234da5
Diameter
157323280
Circumference
494245660.68665
Area
1.9439087116248E+16
Volume
2.0388139635559E+24
Surface area
7.7756348464991E+16
Circumference
494245660.68665
Perimeter
314646560
Area
6187653607489600
Diagonal
111244358.12651
Surface area
37125921644937600
Volume
4.8673098051705E+23
Space diagonal
136245957.08669
Perimeter
235984920
Area
2.6793326069522E+15
Altitude
68122978.543346
Surface area
2.6793326069522E+15
Volume
5.7361796156197E+22
Height
37081452.708837