13415728 has 10 divisors (see below), whose sum is σ = 25993004. Its totient is φ = 6707856.

The previous prime is 13415683. The next prime is 13415741. The reversal of 13415728 is 82751431.

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 13415728.

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 as a sum of consecutive naturals, namely, 419226 + ... + 419257.

Almost surely, 2^13415728 is an apocalyptic number.

It is an amenable number.

13415728 is a deficient number, since it is larger than the sum of its proper divisors (12577276).

13415728 is an equidigital number, since it uses as much as digits as its factorization.

13415728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 838491 (or 838485 counting only the distinct ones).

The product of its digits is 6720, while the sum is 31.

The square root of 13415728 is about 3662.7486946281. The cubic root of 13415728 is about 237.6136659978.

The spelling of 13415728 in words is "thirteen million, four hundred fifteen thousand, seven hundred twenty-eight".