13818428 has 12 divisors (see below), whose sum is σ = 26042520. Its totient is φ = 6377712.

The previous prime is 13818401. The next prime is 13818439. The reversal of 13818428 is 82481831.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132818 + ... + 132921.

It is an arithmetic number, because the mean of its divisors is an integer number (2170210).

Almost surely, 2^13818428 is an apocalyptic number.

It is an amenable number.

13818428 is a deficient number, since it is larger than the sum of its proper divisors (12224092).

13818428 is a wasteful number, since it uses less digits than its factorization.

13818428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265756 (or 265754 counting only the distinct ones).

The product of its digits is 12288, while the sum is 35.

The square root of 13818428 is about 3717.3146221432. The cubic root of 13818428 is about 239.9677502963.

The spelling of 13818428 in words is "thirteen million, eight hundred eighteen thousand, four hundred twenty-eight".