1687056987 is an odd 10-digits composite number following 1687056986
and preceding 1687056988 . In scientific notation, it is written as 1.687056987 × 10^9.
The sum of its digits is 57. It has a total of 4 prime factors and 16 positive divisors.
There are 830265120 positive integers (up to 1687056987) that are relatively prime to 1687056987.
1687056987 has 16 divisors, whose sum is 2029547520
The reverse of 1687056987 is 7896507861
Previous prime number is 19
Is Prime? no
Number parity odd
Number length 10
Sum of Digits 57
Digital Root 3
Name
one billion six hundred eighty-seven million fifty-six thousand nine hundred eighty-seven
Scientific notation
1.687056987 × 10^9
Engineering notation
1.687056987 × 10^9
Prime Factorization
21 × 11 × 19 × 384383
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
1687056987
Product of the distinct prime numbers
The prime factorization of 1687056987 is 21 × 11 × 19 × 384383.
Since it has a total of 4 prime factors.
2 , 10 , 30 , 61 , 231 , 418 , 9131 , 4834 , 87257 , 93581 , 274926 , 636358 , 1682992 , 3384991 , 73432642 , 3542474 , 929685817 , 81195668 , 6583850781 , 8232952294
n×2
3374113974
n×3
5061170961
n×4
6748227948
n×5
8435284935
n÷2
843528493.5
n÷3
562352329
n÷3
421764246.75
n÷5
337411397.4
n2
2846161277385518169
n3
4.8016362691421E+27
n4
8.1006340168888E+36
n5
1.3666231217322E+46
2 √n
41073.799276424
3 √n
1190.4465962575
4 √n
202.66671970608
5 √n
70.052872894978
1 , 11 , 19 , 21 , 209 , 231 , 399 , 4389 , 384383 , 4228213 , 7303277 , 8072043 , 80336047 , 88792473 , 153368817 , 1687056987
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
-1687056986
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 1687056987 can be divided by 16 positive divisors.
The sum of these divisors (counting 1687056987) is 1, the average is 0.0625.
Base
System
Value
2
Binary
1100100100011100111001001011011
3
Ternary
11100120111101010010
4
Quaternary
1210203213021123
5
Quinary
11423341310422
6
Senary
435223253003
8
Octal
14443471133
10
Decimal
1687056987
12
Duodecimal
3b0baa163
16
Hexadecimal
648e725b
20
Vigesimal
16742297
36
Base36
rwfhi3
md5
d9fd744d128283f72a514f7e192133f7
sha1
e1110f7f33a7e42b74b76f2220ac2b6c61f96ced
sha256
fcb627a4a818bcdc0fc384f80e85d9d6004aa55567ded949b4edb75f5b3398fd
sha512
4d0d886c0ee078e80e4f095efec1886d4100c7417657bee47df2269c50c625c6481b58557d36813b3b52e56c21815c917528f1b94b4af42e2c886776eef7f877
ripemd-160
df4da95526db245aefe208a2418562ace05ae2cb
Diameter
3374113974
Circumference
10600091673.093
Area
8.9414793599661E+18
Volume
2.0113046971129E+28
Surface area
3.5765917439864E+19
Circumference
10600091673.093
Perimeter
6748227948
Area
2846161277385518169
Diagonal
2385858871.5117
Surface area
1.7076967664313E+19
Volume
4.8016362691421E+27
Space diagonal
2922068416.7481
Perimeter
5061170961
Area
1.2324239847417E+18
Altitude
1461034208.374
Surface area
1.2324239847417E+18
Volume
5.6587826111694E+26
Height
795286290.5039