13222288 has 10 divisors (see below), whose sum is σ = 25618214. Its totient is φ = 6611136.

The previous prime is 13222273. The next prime is 13222301. The reversal of 13222288 is 88222231.

It can be written as a sum of positive squares in only one way, i.e., 11614464 + 1607824 = 3408^2 + 1268^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 413181 + ... + 413212.

Almost surely, 2^13222288 is an apocalyptic number.

It is an amenable number.

13222288 is a deficient number, since it is larger than the sum of its proper divisors (12395926).

13222288 is an equidigital number, since it uses as much as digits as its factorization.

13222288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 826401 (or 826395 counting only the distinct ones).

The product of its digits is 3072, while the sum is 28.

The square root of 13222288 is about 3636.2464162925. The cubic root of 13222288 is about 236.4660902801.

The spelling of 13222288 in words is "thirteen million, two hundred twenty-two thousand, two hundred eighty-eight".