33044013 has 12 divisors (see below), whose sum is σ = 47941660. Its totient is φ = 21931776.

The previous prime is 33043987. The next prime is 33044017. The reversal of 33044013 is 31044033.

It can be written as a sum of positive squares in 2 ways, for example, as 13089924 + 19954089 = 3618^2 + 4467^2 .

It is not a de Polignac number, because 33044013 - 2⁶ = 33043949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33044017) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5956 + ... + 10077.

Almost surely, 2^33044013 is an apocalyptic number.

It is an amenable number.

33044013 is a deficient number, since it is larger than the sum of its proper divisors (14897647).

33044013 is a wasteful number, since it uses less digits than its factorization.

33044013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16268 (or 16265 counting only the distinct ones).

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

The square root of 33044013 is about 5748.3922100010. The cubic root of 33044013 is about 320.8959688508.

Adding to 33044013 its reverse (31044033), we get a palindrome (64088046).

The spelling of 33044013 in words is "thirty-three million, forty-four thousand, thirteen".