78897391 is an odd 8-digits composite number following 78897390
and preceding 78897392 . In scientific notation, it is written as 7.8897391 × 10^7.
The sum of its digits is 52. It has a total of 4 prime factors and 16 positive divisors.
There are 72382464 positive integers (up to 78897391) that are relatively prime to 78897391.
78897391 has 16 divisors, whose sum is 85675104
The reverse of 78897391 is 19379887
Previous prime number is 67
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 52
Digital Root 7
Name
seventy-eight million eight hundred ninety-seven thousand three hundred ninety-one
Scientific notation
7.8897391 × 10^7
Engineering notation
7.8897391 × 10^6
Prime Factorization
613 × 17 × 67 × 113
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
78897391
Product of the distinct prime numbers
The prime factorization of 78897391 is 613 × 17 × 67 × 113.
Since it has a total of 4 prime factors.
7 , 5 , 9 , 32 , 526 , 340 , 6655 , 1399 , 2377 , 57691 , 155352 , 586647 , 3702554 , 6127379 , 21977664 , 27482593 , 157670193 , 892712850 , 5324086257 , 6475352845
n×2
157794782
n×3
236692173
n×4
315589564
n×5
394486955
n÷2
39448695.5
n÷3
26299130.333333
n÷3
19724347.75
n÷5
15779478.2
n2
6224798306606881
n3
4.911203458925E+23
n4
3.8748113957936E+31
n5
3.0571250974518E+39
2 √n
8882.420334571
3 √n
428.89819055009
4 √n
94.246593225278
5 √n
37.967546054486
1 , 17 , 67 , 113 , 613 , 1139 , 1921 , 7571 , 10421 , 41071 , 69269 , 128707 , 698207 , 1177573 , 4641023 , 78897391
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
-78897390
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 78897391 can be divided by 16 positive divisors.
The sum of these divisors (counting 78897391) is 1, the average is 0.0625.
Base
System
Value
2
Binary
100101100111110000011101111
3
Ternary
12111110101212121
4
Quaternary
10230332003233
5
Quinary
130144204031
6
Senary
11455013411
8
Octal
454760357
10
Decimal
78897391
12
Duodecimal
2250a267
16
Hexadecimal
4b3e0ef
20
Vigesimal
14d239b
36
Base36
1az1m7
md5
9f95a9f5b59df94148d1b69d14de815b
sha1
76c1780542103ec70b5d4ef85f7f9698f39eb8a1
sha256
e6d79a1d9210fddd0fc38e9269228c0b2f32fe4feb02fb44f17427400408ec19
sha512
a0cacefc92ef203560e6df1b401efaaca63d50ff2e8485a67792027c630ec5696c2370b6d24fbe68b5792ae100e28cafbd8169f240b1a83611cbc7e1be1254cf
ripemd-160
bf19e6c1858a37df0efc071ef98f332fe04ed650
Diameter
157794782
Circumference
495726927.906
Area
1.9555780630114E+16
Volume
2.0572000942458E+24
Surface area
7.8223122520457E+16
Circumference
495726927.906
Perimeter
315589564
Area
6224798306606881
Diagonal
111577760.38805
Surface area
37348789839641286
Volume
4.911203458925E+23
Space diagonal
136654289.79663
Perimeter
236692173
Area
2.695416733478E+15
Altitude
68327144.898314
Surface area
2.695416733478E+15
Volume
5.7879087826545E+22
Height
37192586.796018