13124728 has 16 divisors (see below), whose sum is σ = 24651000. Its totient is φ = 6551136.

The previous prime is 13124723. The next prime is 13124747. The reversal of 13124728 is 82742131.

It is a junction number, because it is equal to n+sod(n) for n = 13124696 and 13124705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13124723) 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, 5643 + ... + 7621.

Almost surely, 2^13124728 is an apocalyptic number.

It is an amenable number.

13124728 is a deficient number, since it is larger than the sum of its proper divisors (11526272).

13124728 is a wasteful number, since it uses less digits than its factorization.

13124728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2814 (or 2810 counting only the distinct ones).

The product of its digits is 2688, while the sum is 28.

The square root of 13124728 is about 3622.8066467864. The cubic root of 13124728 is about 235.8830695280.

Adding to 13124728 its reverse (82742131), we get a palindrome (95866859).

The spelling of 13124728 in words is "thirteen million, one hundred twenty-four thousand, seven hundred twenty-eight".