33428764 has 12 divisors (see below), whose sum is σ = 60517800. Its totient is φ = 16137968.

The previous prime is 33428741. The next prime is 33428777. The reversal of 33428764 is 46782433.

It is a happy number.

It is a super-2 number, since 2×33428764² = 2234964525135392, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143974 + ... + 144205.

It is an arithmetic number, because the mean of its divisors is an integer number (5043150).

Almost surely, 2^33428764 is an apocalyptic number.

It is an amenable number.

33428764 is a deficient number, since it is larger than the sum of its proper divisors (27089036).

33428764 is a wasteful number, since it uses less digits than its factorization.

33428764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288212 (or 288210 counting only the distinct ones).

The product of its digits is 96768, while the sum is 37.

The square root of 33428764 is about 5781.7613233339. The cubic root of 33428764 is about 322.1366265618.

The spelling of 33428764 in words is "thirty-three million, four hundred twenty-eight thousand, seven hundred sixty-four".