33520828 has 24 divisors (see below), whose sum is σ = 64436400. Its totient is φ = 15131520.

The previous prime is 33520813. The next prime is 33520829. The reversal of 33520828 is 82802533.

It is a super-2 number, since 2×33520828² = 2247291819611168, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 33520828.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33520829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4000 + ... + 9112.

It is an arithmetic number, because the mean of its divisors is an integer number (2684850).

Almost surely, 2^33520828 is an apocalyptic number.

It is an amenable number.

33520828 is a deficient number, since it is larger than the sum of its proper divisors (30915572).

33520828 is a wasteful number, since it uses less digits than its factorization.

33520828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5277 (or 5275 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 33520828 is about 5789.7174369739. The cubic root of 33520828 is about 322.4320807234.

The spelling of 33520828 in words is "thirty-three million, five hundred twenty thousand, eight hundred twenty-eight".