Base | Representation |
---|---|
bin | 11111111101101… |
… | …01100101000111 |
3 | 200200112110002010 |
4 | 33332311211013 |
5 | 1022120140011 |
6 | 42334545303 |
7 | 6434033646 |
oct | 1776654507 |
9 | 620473063 |
10 | 268130631 |
11 | 12839756a |
12 | 75968233 |
13 | 4371cca2 |
14 | 2787935d |
15 | 188161a6 |
hex | ffb5947 |
268130631 has 8 divisors (see below), whose sum is σ = 357994240. Its totient is φ = 178510392.
The previous prime is 268130617. The next prime is 268130663. The reversal of 268130631 is 136031862.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 268130631 - 211 = 268128583 is a prime.
It is a super-2 number, since 2×2681306312 = 143788070560916322, which contains 22 as substring.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (268130131) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58255 + ... + 62688.
It is an arithmetic number, because the mean of its divisors is an integer number (44749280).
Almost surely, 2268130631 is an apocalyptic number.
268130631 is a deficient number, since it is larger than the sum of its proper divisors (89863609).
268130631 is a wasteful number, since it uses less digits than its factorization.
268130631 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 121685.
The product of its (nonzero) digits is 5184, while the sum is 30.
The square root of 268130631 is about 16374.6948368512. The cubic root of 268130631 is about 644.8353091932.
The spelling of 268130631 in words is "two hundred sixty-eight million, one hundred thirty thousand, six hundred thirty-one".
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