268920188 has 12 divisors (see below), whose sum is σ = 471187920. Its totient is φ = 134295072.

The previous prime is 268920173. The next prime is 268920191. The reversal of 268920188 is 881029862.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37553 + ... + 44136.

It is an arithmetic number, because the mean of its divisors is an integer number (39265660).

Almost surely, 2^268920188 is an apocalyptic number.

It is an amenable number.

268920188 is a deficient number, since it is larger than the sum of its proper divisors (202267732).

268920188 is a wasteful number, since it uses less digits than its factorization.

268920188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82516 (or 82514 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 44.

The square root of 268920188 is about 16398.7861745923. The cubic root of 268920188 is about 645.4676319553.

The spelling of 268920188 in words is "two hundred sixty-eight million, nine hundred twenty thousand, one hundred eighty-eight".