33124428 has 18 divisors (see below), whose sum is σ = 83731284. Its totient is φ = 11041464.

The previous prime is 33124373. The next prime is 33124447. The reversal of 33124428 is 82442133.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 460026 + ... + 460097.

It is an arithmetic number, because the mean of its divisors is an integer number (4651738).

Almost surely, 2^33124428 is an apocalyptic number.

It is an amenable number.

33124428 is an abundant number, since it is smaller than the sum of its proper divisors (50606856).

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

33124428 is a wasteful number, since it uses less digits than its factorization.

33124428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 920133 (or 920128 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

The square root of 33124428 is about 5755.3825242116. The cubic root of 33124428 is about 321.1560658406.

The spelling of 33124428 in words is "thirty-three million, one hundred twenty-four thousand, four hundred twenty-eight".