13728678 has 16 divisors (see below), whose sum is σ = 28902720. Its totient is φ = 4335336.

The previous prime is 13728661. The next prime is 13728679. The reversal of 13728678 is 87682731.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13728679) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60100 + ... + 60327.

It is an arithmetic number, because the mean of its divisors is an integer number (1806420).

Almost surely, 2^13728678 is an apocalyptic number.

13728678 is an abundant number, since it is smaller than the sum of its proper divisors (15174042).

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

13728678 is a wasteful number, since it uses less digits than its factorization.

13728678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120451.

The product of its digits is 112896, while the sum is 42.

The square root of 13728678 is about 3705.2230702078. The cubic root of 13728678 is about 239.4470952685.

The spelling of 13728678 in words is "thirteen million, seven hundred twenty-eight thousand, six hundred seventy-eight".