13728578 has 8 divisors (see below), whose sum is σ = 20616768. Its totient is φ = 6856324.

The previous prime is 13728577. The next prime is 13728581. The reversal of 13728578 is 87582731.

13728578 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (13728577) 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, 1526 + ... + 5457.

It is an arithmetic number, because the mean of its divisors is an integer number (2577096).

Almost surely, 2^13728578 is an apocalyptic number.

13728578 is a deficient number, since it is larger than the sum of its proper divisors (6888190).

13728578 is an equidigital number, since it uses as much as digits as its factorization.

13728578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7968.

The product of its digits is 94080, while the sum is 41.

The square root of 13728578 is about 3705.2095757190. The cubic root of 13728578 is about 239.4465138878.

The spelling of 13728578 in words is "thirteen million, seven hundred twenty-eight thousand, five hundred seventy-eight".