33810428 has 12 divisors (see below), whose sum is σ = 59511480. Its totient is φ = 16807152.

The previous prime is 33810419. The next prime is 33810431. The reversal of 33810428 is 82401833.

It is a happy number.

It is a super-2 number, since 2×33810428² = 2286290083086368, 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 33810428.

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, 23738 + ... + 25121.

It is an arithmetic number, because the mean of its divisors is an integer number (4959290).

Almost surely, 2^33810428 is an apocalyptic number.

It is an amenable number.

33810428 is a deficient number, since it is larger than the sum of its proper divisors (25701052).

33810428 is a wasteful number, since it uses less digits than its factorization.

33810428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49036 (or 49034 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 33810428 is about 5814.6735076013. The cubic root of 33810428 is about 323.3579598867.

The spelling of 33810428 in words is "thirty-three million, eight hundred ten thousand, four hundred twenty-eight".