33040413 has 32 divisors (see below), whose sum is σ = 56908800. Its totient is φ = 18553968.

The previous prime is 33040393. The next prime is 33040421. The reversal of 33040413 is 31404033.

It is not a de Polignac number, because 33040413 - 2¹⁰ = 33039389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33040613) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9670 + ... + 12632.

It is an arithmetic number, because the mean of its divisors is an integer number (1778400).

Almost surely, 2^33040413 is an apocalyptic number.

It is an amenable number.

33040413 is a deficient number, since it is larger than the sum of its proper divisors (23868387).

33040413 is a wasteful number, since it uses less digits than its factorization.

33040413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3038 (or 3032 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 33040413 is about 5748.0790704374. The cubic root of 33040413 is about 320.8843150258.

Adding to 33040413 its reverse (31404033), we get a palindrome (64444446).

The spelling of 33040413 in words is "thirty-three million, forty thousand, four hundred thirteen".