13233728 has 28 divisors (see below), whose sum is σ = 27645360. Its totient is φ = 6268032.

The previous prime is 13233713. The next prime is 13233757. The reversal of 13233728 is 82733231.

It is a self number, because there is not a number n which added to its sum of digits gives 13233728.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4226 + ... + 6657.

Almost surely, 2^13233728 is an apocalyptic number.

It is an amenable number.

13233728 is an abundant number, since it is smaller than the sum of its proper divisors (14411632).

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

13233728 is a wasteful number, since it uses less digits than its factorization.

13233728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10914 (or 10904 counting only the distinct ones).

The product of its digits is 6048, while the sum is 29.

The square root of 13233728 is about 3637.8191268946. The cubic root of 13233728 is about 236.5342678973.

Adding to 13233728 its reverse (82733231), we get a palindrome (95966959).

The spelling of 13233728 in words is "thirteen million, two hundred thirty-three thousand, seven hundred twenty-eight".