Base | Representation |
---|---|
bin | 1111100101000… |
… | …00010010110001 |
3 | 100002220020020110 |
4 | 13302200102301 |
5 | 231423224420 |
6 | 20544531533 |
7 | 3144522132 |
oct | 762402261 |
9 | 302806213 |
10 | 130679985 |
11 | 67846897 |
12 | 37920ba9 |
13 | 210c6147 |
14 | 134d9c89 |
15 | b714ee0 |
hex | 7ca04b1 |
130679985 has 16 divisors (see below), whose sum is σ = 212633280. Its totient is φ = 68514240.
The previous prime is 130679981. The next prime is 130679987. The reversal of 130679985 is 589976031.
It is not a de Polignac number, because 130679985 - 22 = 130679981 is a prime.
It is not an unprimeable number, because it can be changed into a prime (130679981) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72946 + ... + 74715.
It is an arithmetic number, because the mean of its divisors is an integer number (13289580).
Almost surely, 2130679985 is an apocalyptic number.
130679985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.
It is an amenable number.
130679985 is a deficient number, since it is larger than the sum of its proper divisors (81953295).
130679985 is a wasteful number, since it uses less digits than its factorization.
130679985 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 147728.
The product of its (nonzero) digits is 408240, while the sum is 48.
The square root of 130679985 is about 11431.5346738747. The cubic root of 130679985 is about 507.4614140707.
The spelling of 130679985 in words is "one hundred thirty million, six hundred seventy-nine thousand, nine hundred eighty-five".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.067 sec. • engine limits •