33405056 has 32 divisors (see below), whose sum is σ = 66810000. Its totient is φ = 16637184.

The previous prime is 33405049. The next prime is 33405067. The reversal of 33405056 is 65050433.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×33405056² = 2231795532726272, which contains 22 as substring.

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, 63611 + ... + 64133.

Almost surely, 2^33405056 is an apocalyptic number.

It is an amenable number.

33405056 is a deficient number, since it is larger than the sum of its proper divisors (33404944).

33405056 is an equidigital number, since it uses as much as digits as its factorization.

33405056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1036 (or 1024 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 26.

The square root of 33405056 is about 5779.7107194046. The cubic root of 33405056 is about 322.0604544234.

Adding to 33405056 its reverse (65050433), we get a palindrome (98455489).

The spelling of 33405056 in words is "thirty-three million, four hundred five thousand, fifty-six".