13040304 has 40 divisors (see below), whose sum is σ = 34015680. Its totient is φ = 4304448.

The previous prime is 13040297. The next prime is 13040323. The reversal of 13040304 is 40304031.

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 7 ways as a sum of consecutive naturals, for example, 3867 + ... + 6405.

It is an arithmetic number, because the mean of its divisors is an integer number (850392).

Almost surely, 2^13040304 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13040304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17007840).

13040304 is an abundant number, since it is smaller than the sum of its proper divisors (20975376).

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

13040304 is a wasteful number, since it uses less digits than its factorization.

13040304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2657 (or 2651 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 13040304 is about 3611.1361093152. The cubic root of 13040304 is about 235.3762134509.

Adding to 13040304 its reverse (40304031), we get a palindrome (53344335).

The spelling of 13040304 in words is "thirteen million, forty thousand, three hundred four".