13438628 has 12 divisors (see below), whose sum is σ = 26877312. Its totient is φ = 5759400.

The previous prime is 13438609. The next prime is 13438637. The reversal of 13438628 is 82683431.

It is a happy number.

13438628 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 239948 + ... + 240003.

It is an arithmetic number, because the mean of its divisors is an integer number (2239776).

Almost surely, 2^13438628 is an apocalyptic number.

It is an amenable number.

13438628 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

13438628 is a wasteful number, since it uses less digits than its factorization.

13438628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479962 (or 479960 counting only the distinct ones).

The product of its digits is 27648, while the sum is 35.

The square root of 13438628 is about 3665.8734293480. The cubic root of 13438628 is about 237.7487874970.

The spelling of 13438628 in words is "thirteen million, four hundred thirty-eight thousand, six hundred twenty-eight".