13438828 has 24 divisors (see below), whose sum is σ = 25570160. Its totient is φ = 6143040.

The previous prime is 13438811. The next prime is 13438853. The reversal of 13438828 is 82883431.

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 7 ways as a sum of consecutive naturals, for example, 4483 + ... + 6853.

Almost surely, 2^13438828 is an apocalyptic number.

It is an amenable number.

13438828 is a deficient number, since it is larger than the sum of its proper divisors (12131332).

13438828 is a wasteful number, since it uses less digits than its factorization.

13438828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2497 (or 2495 counting only the distinct ones).

The product of its digits is 36864, while the sum is 37.

The square root of 13438828 is about 3665.9007078752. The cubic root of 13438828 is about 237.7499669210.

The spelling of 13438828 in words is "thirteen million, four hundred thirty-eight thousand, eight hundred twenty-eight".