13666828 has 24 divisors (see below), whose sum is σ = 27417600. Its totient is φ = 5839248.

The previous prime is 13666823. The next prime is 13666843. The reversal of 13666828 is 82866631.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (13666823) 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, 12903 + ... + 13921.

It is an arithmetic number, because the mean of its divisors is an integer number (1142400).

Almost surely, 2^13666828 is an apocalyptic number.

It is an amenable number.

13666828 is an abundant number, since it is smaller than the sum of its proper divisors (13750772).

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

13666828 is a wasteful number, since it uses less digits than its factorization.

13666828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1509 (or 1507 counting only the distinct ones).

The product of its digits is 82944, while the sum is 40.

The square root of 13666828 is about 3696.8673224772. The cubic root of 13666828 is about 239.0869707931.

The spelling of 13666828 in words is "thirteen million, six hundred sixty-six thousand, eight hundred twenty-eight".