33120440 has 16 divisors (see below), whose sum is σ = 74521080. Its totient is φ = 13248160.

The previous prime is 33120421. The next prime is 33120467. The reversal of 33120440 is 4402133.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 413966 + ... + 414045.

Almost surely, 2^33120440 is an apocalyptic number.

It is an amenable number.

33120440 is an abundant number, since it is smaller than the sum of its proper divisors (41400640).

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

33120440 is a wasteful number, since it uses less digits than its factorization.

33120440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 828022 (or 828018 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 33120440 is about 5755.0360554909. The cubic root of 33120440 is about 321.1431768453.

Adding to 33120440 its reverse (4402133), we get a palindrome (37522573).

The spelling of 33120440 in words is "thirty-three million, one hundred twenty thousand, four hundred forty".