13438028 has 12 divisors (see below), whose sum is σ = 23848272. Its totient is φ = 6624240.

The previous prime is 13438013. The next prime is 13438031. The reversal of 13438028 is 82083431.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23375 + ... + 23942.

It is an arithmetic number, because the mean of its divisors is an integer number (1987356).

Almost surely, 2^13438028 is an apocalyptic number.

It is an amenable number.

13438028 is a deficient number, since it is larger than the sum of its proper divisors (10410244).

13438028 is a wasteful number, since it uses less digits than its factorization.

13438028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47392 (or 47390 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 13438028 is about 3665.7915925486. The cubic root of 13438028 is about 237.7452491548.

The spelling of 13438028 in words is "thirteen million, four hundred thirty-eight thousand, twenty-eight".