87081689 is an odd 8-digits composite number following 87081688
and preceding 87081690 . In scientific notation, it is written as 8.7081689 × 10^7.
The sum of its digits is 47. It has a total of 2 prime factors and 4 positive divisors.
There are 86734500 positive integers (up to 87081689) that are relatively prime to 87081689.
87081689 has 4 divisors, whose sum is 87428880
The reverse of 87081689 is 98618078
Previous prime number is 251
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 47
Digital Root 2
Name
eighty-seven million eighty-one thousand six hundred eighty-nine
Scientific notation
8.7081689 × 10^7
Engineering notation
8.7081689 × 10^6
Prime Factorization
251 × 346939
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
87081689
Product of the distinct prime numbers
The prime factorization of 87081689 is 251 × 346939.
Since it has a total of 2 prime factors.
1 , 1 , 88 , 14 , 232 , 321 , 6463 , 2042 , 10972 , 67064 , 996823 , 679298 , 8479189 , 9548920 , 28804601 , 81179083 , 768901916 , 751632119 , 2865220897 , 6218767798
n×2
174163378
n×3
261245067
n×4
348326756
n×5
435408445
n÷2
43540844.5
n÷3
29027229.666667
n÷3
21770422.25
n÷5
17416337.8
n2
7583220559092721
n3
6.6035965434532E+23
n4
5.7505234047847E+31
n5
5.0076529072268E+39
2 √n
9331.7570156965
3 √n
443.24340378539
4 √n
96.601019744599
5 √n
38.724459856513
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
-87081688
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 87081689 can be divided by 4 positive divisors.
The sum of these divisors (counting 87081689) is 1, the average is 0.25.
Base
System
Value
2
Binary
101001100001100001011011001
3
Ternary
20001212012121202
4
Quaternary
11030030023121
5
Quinary
134243103224
6
Senary
12350243545
8
Octal
514141331
10
Decimal
87081689
12
Duodecimal
251b65b5
16
Hexadecimal
530c2d9
20
Vigesimal
1745449
36
Base36
1fugnt
md5
856498dd6ac0098c01e1719ae8685441
sha1
4c43a01c4d3a45d5553d0fec993befbe82836caf
sha256
15baf76570b569738bdfeb145776a18ef460c8737e0bbddc1baa77f4b89d2ead
sha512
239290014da595b3bf16ab2da6bd369a6371ba44d3bec55f4a0b26afa8a4514c30805ee8503bbc36048f5f3af857e96083c81f44f63a9c0ffc439e12bf089da2
ripemd-160
d6cf56d81d18222bb1c9698be184cc1f23e55d69
Diameter
174163378
Circumference
547150388.84918
Area
2.3823389998997E+16
Volume
2.7661080517578E+24
Surface area
9.5293559995987E+16
Circumference
547150388.84918
Perimeter
348326756
Area
7583220559092721
Diagonal
123152105.61816
Surface area
45499323354556326
Volume
6.6035965434532E+23
Space diagonal
150829909.75691
Perimeter
261245067
Area
3.2836308233374E+15
Altitude
75414954.878456
Surface area
3.2836308233374E+15
Volume
7.7824131601597E+22
Height
41050701.872719