13253728 has 12 divisors (see below), whose sum is σ = 26093340. Its totient is φ = 6626848.

The previous prime is 13253687. The next prime is 13253729. The reversal of 13253728 is 82735231.

It is a super-2 number, since 2×13253728² = 351322611795968, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13253728.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13253729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 207058 + ... + 207121.

It is an arithmetic number, because the mean of its divisors is an integer number (2174445).

Almost surely, 2^13253728 is an apocalyptic number.

It is an amenable number.

13253728 is a deficient number, since it is larger than the sum of its proper divisors (12839612).

13253728 is an equidigital number, since it uses as much as digits as its factorization.

13253728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414189 (or 414181 counting only the distinct ones).

The product of its digits is 10080, while the sum is 31.

The square root of 13253728 is about 3640.5669888082. The cubic root of 13253728 is about 236.6533652072.

Adding to 13253728 its reverse (82735231), we get a palindrome (95988959).

The spelling of 13253728 in words is "thirteen million, two hundred fifty-three thousand, seven hundred twenty-eight".