87989691 is an odd 8-digits composite number following 87989690
and preceding 87989692 . In scientific notation, it is written as 8.7989691 × 10^7.
The sum of its digits is 57. It has a total of 2 prime factors and 4 positive divisors.
There are 58659792 positive integers (up to 87989691) that are relatively prime to 87989691.
87989691 has 4 divisors, whose sum is 117319592
The reverse of 87989691 is 19698978
Previous prime number is 3
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 57
Digital Root 3
Name
eighty-seven million nine hundred eighty-nine thousand six hundred ninety-one
Scientific notation
8.7989691 × 10^7
Engineering notation
8.7989691 × 10^6
Prime Factorization
3 × 29329897
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
87989691
Product of the distinct prime numbers
The prime factorization of 87989691 is 3 × 29329897.
Since it has a total of 2 prime factors.
2 , 4 , 86 , 13 , 597 , 129 , 7782 , 5199 , 54349 , 52833 , 479382 , 671491 , 3822668 , 9887399 , 79752384 , 79463517 , 258412205 , 733115986 , 6145897824 , 7629296969
n×2
175979382
n×3
263969073
n×4
351958764
n×5
439948455
n÷2
43994845.5
n÷3
29329897
n÷3
21997422.75
n÷5
17597938.2
n2
7742185722275481
n3
6.8123252936763E+23
n4
5.9941439758206E+31
n5
5.2742287624197E+39
2 √n
9380.2820320074
3 √n
444.77864848803
4 √n
96.851856110285
5 √n
38.80488122834
4 divisors
τ
Total Divisors
4
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-87989690
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.25
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
4
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 87989691 can be divided by 4 positive divisors.
The sum of these divisors (counting 87989691) is 1, the average is 0.25.
Base
System
Value
2
Binary
101001111101001110110111011
3
Ternary
20010120100011110
4
Quaternary
11033221312323
5
Quinary
140011132231
6
Senary
12421531403
8
Octal
517516673
10
Decimal
87989691
12
Duodecimal
25573b63
16
Hexadecimal
53e9dbb
20
Vigesimal
179ie4b
36
Base36
1gdxa3
md5
1794b688b7af547e87ecc6f49f144313
sha1
2d3892386b0dcfe690f7c32bebe6989018397766
sha256
5a76903c390fe54db2e7a2370c1681949ca3731cebeb68f6442d41d4c0385143
sha512
9d3c3bf58d0a1f0476fb4398f2c3f53bc1bbb873e3cba03d1ae145f30a6469121b15da8dd9630132322e18bf41215dae90a39eebc03358ffc0950e3d6f5b84f1
ripemd-160
125c68871e8e783d8b4d97d2a9f64df54fa7fd7c
Diameter
175979382
Circumference
552855533.67447
Area
2.4322793787828E+16
Volume
2.853540146197E+24
Surface area
9.7291175151314E+16
Circumference
552855533.67447
Perimeter
351958764
Area
7742185722275481
Diagonal
124436214.36122
Surface area
46453114333652886
Volume
6.8123252936763E+23
Space diagonal
152402615.35429
Perimeter
263969073
Area
3.3524647581539E+15
Altitude
76201307.677143
Surface area
3.3524647581539E+15
Volume
8.0284023513453E+22
Height
41478738.120406