13304240 has 20 divisors (see below), whose sum is σ = 30932544. Its totient is φ = 5321664.

The previous prime is 13304233. The next prime is 13304267. The reversal of 13304240 is 4240331.

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83072 + ... + 83231.

Almost surely, 2^13304240 is an apocalyptic number.

13304240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13304240 is an abundant number, since it is smaller than the sum of its proper divisors (17628304).

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

13304240 is a wasteful number, since it uses less digits than its factorization.

13304240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166316 (or 166310 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 13304240 is about 3647.4977724462. The cubic root of 13304240 is about 236.9536248998.

Adding to 13304240 its reverse (4240331), we get a palindrome (17544571).

The spelling of 13304240 in words is "thirteen million, three hundred four thousand, two hundred forty".