33388828 has 12 divisors (see below), whose sum is σ = 63742392. Its totient is φ = 15176720.

The previous prime is 33388787. The next prime is 33388841. The reversal of 33388828 is 82888333.

It is a super-2 number, since 2×33388828² = 2229627670427168, 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, 379375 + ... + 379462.

It is an arithmetic number, because the mean of its divisors is an integer number (5311866).

Almost surely, 2^33388828 is an apocalyptic number.

It is an amenable number.

33388828 is a deficient number, since it is larger than the sum of its proper divisors (30353564).

33388828 is a wasteful number, since it uses less digits than its factorization.

33388828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 758852 (or 758850 counting only the distinct ones).

The product of its digits is 221184, while the sum is 43.

The square root of 33388828 is about 5778.3066723738. The cubic root of 33388828 is about 322.0082942194.

The spelling of 33388828 in words is "thirty-three million, three hundred eighty-eight thousand, eight hundred twenty-eight".