332749728 has 48 divisors (see below), whose sum is σ = 970522560. Its totient is φ = 110916288.

The previous prime is 332749709. The next prime is 332749771. The reversal of 332749728 is 827947233.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×332749728² = 221444762968147968, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

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, 191700 + ... + 193427.

It is an arithmetic number, because the mean of its divisors is an integer number (20219220).

Almost surely, 2^332749728 is an apocalyptic number.

It is an amenable number.

332749728 is an abundant number, since it is smaller than the sum of its proper divisors (637772832).

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

332749728 is a wasteful number, since it uses less digits than its factorization.

332749728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385146 (or 385132 counting only the distinct ones).

The product of its digits is 508032, while the sum is 45.

The square root of 332749728 is about 18241.4288913999. The cubic root of 332749728 is about 692.9563886275.

The spelling of 332749728 in words is "three hundred thirty-two million, seven hundred forty-nine thousand, seven hundred twenty-eight".