13628404 has 6 divisors (see below), whose sum is σ = 23849714. Its totient is φ = 6814200.

The previous prime is 13628393. The next prime is 13628411. The reversal of 13628404 is 40482631.

It can be written as a sum of positive squares in only one way, i.e., 12236004 + 1392400 = 3498^2 + 1180^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1703547 + ... + 1703554.

Almost surely, 2^13628404 is an apocalyptic number.

It is an amenable number.

13628404 is a deficient number, since it is larger than the sum of its proper divisors (10221310).

13628404 is a wasteful number, since it uses less digits than its factorization.

13628404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3407105 (or 3407103 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 13628404 is about 3691.6668322047. Note that the first 3 decimals coincide. The cubic root of 13628404 is about 238.8626978157.

The spelling of 13628404 in words is "thirteen million, six hundred twenty-eight thousand, four hundred four".