13040433 has 40 divisors (see below), whose sum is σ = 22573760. Its totient is φ = 7348320.

The previous prime is 13040381. The next prime is 13040449. The reversal of 13040433 is 33404031.

It is not a de Polignac number, because 13040433 - 2⁸ = 13040177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13040483) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 61698 + ... + 61908.

It is an arithmetic number, because the mean of its divisors is an integer number (564344).

Almost surely, 2^13040433 is an apocalyptic number.

It is an amenable number.

13040433 is a deficient number, since it is larger than the sum of its proper divisors (9533327).

13040433 is a wasteful number, since it uses less digits than its factorization.

13040433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339 (or 330 counting only the distinct ones).

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

The square root of 13040433 is about 3611.1539706858. The cubic root of 13040433 is about 235.3769895941.

Adding to 13040433 its reverse (33404031), we get a palindrome (46444464).

The spelling of 13040433 in words is "thirteen million, forty thousand, four hundred thirty-three".