33905028 has 12 divisors (see below), whose sum is σ = 79111760. Its totient is φ = 11301672.

The previous prime is 33905017. The next prime is 33905033. The reversal of 33905028 is 82050933.

It is a happy number.

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

It is a super-2 number, since 2×33905028² = 2299101847361568, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33904986 and 33905004.

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, 1412698 + ... + 1412721.

Almost surely, 2^33905028 is an apocalyptic number.

It is an amenable number.

33905028 is an abundant number, since it is smaller than the sum of its proper divisors (45206732).

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

33905028 is a wasteful number, since it uses less digits than its factorization.

33905028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2825426 (or 2825424 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 33905028 is about 5822.8024180801. The cubic root of 33905028 is about 323.6592592154.

The spelling of 33905028 in words is "thirty-three million, nine hundred five thousand, twenty-eight".