268921320 has 32 divisors (see below), whose sum is σ = 806764320. Its totient is φ = 71712320.

The previous prime is 268921319. The next prime is 268921333. The reversal of 268921320 is 23129862.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1120386 + ... + 1120625.

It is an arithmetic number, because the mean of its divisors is an integer number (25211385).

Almost surely, 2^268921320 is an apocalyptic number.

268921320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

268921320 is an abundant number, since it is smaller than the sum of its proper divisors (537843000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

268921320 is a wasteful number, since it uses less digits than its factorization.

268921320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2241025 (or 2241021 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 268921320 is about 16398.8206893057. The cubic root of 268921320 is about 645.4685376371.

The spelling of 268921320 in words is "two hundred sixty-eight million, nine hundred twenty-one thousand, three hundred twenty".