13252728 has 32 divisors (see below), whose sum is σ = 34876800. Its totient is φ = 4184928.

The previous prime is 13252721. The next prime is 13252751. The reversal of 13252728 is 82725231.

It is a junction number, because it is equal to n+sod(n) for n = 13252695 and 13252704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13252721) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 14076 + ... + 14987.

It is an arithmetic number, because the mean of its divisors is an integer number (1089900).

Almost surely, 2^13252728 is an apocalyptic number.

It is an amenable number.

13252728 is an abundant number, since it is smaller than the sum of its proper divisors (21624072).

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

13252728 is a wasteful number, since it uses less digits than its factorization.

13252728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29091 (or 29087 counting only the distinct ones).

The product of its digits is 6720, while the sum is 30.

The square root of 13252728 is about 3640.4296449732. The cubic root of 13252728 is about 236.6474131883.

Adding to 13252728 its reverse (82725231), we get a palindrome (95977959).

The spelling of 13252728 in words is "thirteen million, two hundred fifty-two thousand, seven hundred twenty-eight".