33388764 has 12 divisors (see below), whose sum is σ = 77907144. Its totient is φ = 11129584.

The previous prime is 33388727. The next prime is 33388783. The reversal of 33388764 is 46788333.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×33388764² = 2229619122895392, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1391187 + ... + 1391210.

It is an arithmetic number, because the mean of its divisors is an integer number (6492262).

Almost surely, 2^33388764 is an apocalyptic number.

It is an amenable number.

33388764 is an abundant number, since it is smaller than the sum of its proper divisors (44518380).

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

33388764 is a wasteful number, since it uses less digits than its factorization.

33388764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2782404 (or 2782402 counting only the distinct ones).

The product of its digits is 290304, while the sum is 42.

The square root of 33388764 is about 5778.3011344166. The cubic root of 33388764 is about 322.0080884765.

The spelling of 33388764 in words is "thirty-three million, three hundred eighty-eight thousand, seven hundred sixty-four".