264728 has 8 divisors (see below), whose sum is σ = 496380. Its totient is φ = 132360.

The previous prime is 264697. The next prime is 264731. The reversal of 264728 is 827462.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 264728.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 264728.

It is an unprimeable number.

264728 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16538 + ... + 16553.

2²⁶⁴⁷²⁸ is an apocalyptic number.

It is an amenable number.

264728 is a deficient number, since it is larger than the sum of its proper divisors (231652).

264728 is a wasteful number, since it uses less digits than its factorization.

264728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33097 (or 33093 counting only the distinct ones).

The product of its digits is 5376, while the sum is 29.

The square root of 264728 is about 514.5172494679. The cubic root of 264728 is about 64.2095992737.

The spelling of 264728 in words is "two hundred sixty-four thousand, seven hundred twenty-eight".