13280304 has 20 divisors (see below), whose sum is σ = 34307576. Its totient is φ = 4426752.

The previous prime is 13280303. The next prime is 13280317. The reversal of 13280304 is 40308231.

It is a happy number.

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13280303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138289 + ... + 138384.

Almost surely, 2^13280304 is an apocalyptic number.

It is an amenable number.

13280304 is an abundant number, since it is smaller than the sum of its proper divisors (21027272).

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

13280304 is a wasteful number, since it uses less digits than its factorization.

13280304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276684 (or 276678 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 13280304 is about 3644.2151418378. The cubic root of 13280304 is about 236.8114364759.

Adding to 13280304 its reverse (40308231), we get a palindrome (53588535).

The spelling of 13280304 in words is "thirteen million, two hundred eighty thousand, three hundred four".