33678828 has 36 divisors (see below), whose sum is σ = 88288200. Its totient is φ = 11225952.

The previous prime is 33678809. The next prime is 33678857. The reversal of 33678828 is 82887633.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×33678828² = 2268526910907168, 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 11 ways as a sum of consecutive naturals, for example, 16353 + ... + 18296.

It is an arithmetic number, because the mean of its divisors is an integer number (2452450).

Almost surely, 2^33678828 is an apocalyptic number.

It is an amenable number.

33678828 is an abundant number, since it is smaller than the sum of its proper divisors (54609372).

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

33678828 is a wasteful number, since it uses less digits than its factorization.

33678828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34668 (or 34654 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 33678828 is about 5803.3462760721. The cubic root of 33678828 is about 322.9378800429.

The spelling of 33678828 in words is "thirty-three million, six hundred seventy-eight thousand, eight hundred twenty-eight".