13928224 has 12 divisors (see below), whose sum is σ = 27421254. Its totient is φ = 6964096.

The previous prime is 13928221. The next prime is 13928237. The reversal of 13928224 is 42282931.

It can be written as a sum of positive squares in only one way, i.e., 13927824 + 400 = 3732^2 + 20^2 .

It is not an unprimeable number, because it can be changed into a prime (13928221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 217597 + ... + 217660.

Almost surely, 2^13928224 is an apocalyptic number.

It is an amenable number.

13928224 is a deficient number, since it is larger than the sum of its proper divisors (13493030).

13928224 is an equidigital number, since it uses as much as digits as its factorization.

13928224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435267 (or 435259 counting only the distinct ones).

The product of its digits is 6912, while the sum is 31.

The square root of 13928224 is about 3732.0535901833. The cubic root of 13928224 is about 240.6016386833.

The spelling of 13928224 in words is "thirteen million, nine hundred twenty-eight thousand, two hundred twenty-four".