78840661 is an odd 8-digits composite number following 78840660
and preceding 78840662 . In scientific notation, it is written as 7.8840661 × 10^7.
The sum of its digits is 40. It has a total of 3 prime factors and 8 positive divisors.
There are 77933568 positive integers (up to 78840661) that are relatively prime to 78840661.
78840661 has 8 divisors, whose sum is 79752960
The reverse of 78840661 is 16604887
Previous prime number is 257
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 40
Digital Root 4
Name
seventy-eight million eight hundred forty thousand six hundred sixty-one
Scientific notation
7.8840661 × 10^7
Engineering notation
7.8840661 × 10^6
Prime Factorization
139 × 257 × 2207
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
78840661
Product of the distinct prime numbers
The prime factorization of 78840661 is 139 × 257 × 2207.
Since it has a total of 3 prime factors.
9 , 9 , 15 , 16 , 165 , 375 , 5324 , 1260 , 74558 , 96314 , 941378 , 441342 , 8740336 , 5036743 , 40132019 , 51349820 , 211712343 , 617825468 , 1570923700 , 711708088
n×2
157681322
n×3
236521983
n×4
315362644
n×5
394203305
n÷2
39420330.5
n÷3
26280220.333333
n÷3
19710165.25
n÷5
15768132.2
n2
6215849826916921
n3
4.9006170903087E+23
n4
3.8636789070783E+31
n5
3.0461499892581E+39
2 √n
8879.2263739585
3 √n
428.79536827219
4 √n
94.229647001135
5 √n
37.962084483148
8 divisors
τ
Total Divisors
8
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-78840660
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.125
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
8
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 78840661 can be divided by 8 positive divisors.
The sum of these divisors (counting 78840661) is 1, the average is 0.125.
Base
System
Value
2
Binary
100101100110000001101010101
3
Ternary
12111100112001111
4
Quaternary
10230300031111
5
Quinary
130140400121
6
Senary
11453455021
8
Octal
454601525
10
Decimal
78840661
12
Duodecimal
224a1471
16
Hexadecimal
4b30355
20
Vigesimal
14cf1d1
36
Base36
1axtud
md5
9c65a1a27da0ac74760df957fdce276c
sha1
ea7e68cb0fddb504837fe9a0f36f151bdfc60d6d
sha256
5af1c772cbad1e75e6f17c9a7be98434b7626dd639a1d0dfa279a89db65e3257
sha512
3d053855edc8a1b2751df38159866d9e925bec66ef97efd68404e63a24f149cb2686b037bf374d48f5b1bcf64658485e11a342f5201c1fd39b45999b91e40250
ripemd-160
aad52da9d8626aa726ff7e80017fbc18d2fc3dba
Diameter
157681322
Circumference
495370482.80353
Area
1.952766815206E+16
Volume
2.0527656865294E+24
Surface area
7.8110672608238E+16
Circumference
495370482.80353
Perimeter
315362644
Area
6215849826916921
Diagonal
111497532.05266
Surface area
37295098961501526
Volume
4.9006170903087E+23
Space diagonal
136556030.55431
Perimeter
236521983
Area
2.6915419281096E+15
Altitude
68278015.277157
Surface area
2.6915419281096E+15
Volume
5.7754326275932E+22
Height
37165844.017553