12888224 has 12 divisors (see below), whose sum is σ = 25373754. Its totient is φ = 6444096.

The previous prime is 12888217. The next prime is 12888241. The reversal of 12888224 is 42288821.

It can be written as a sum of positive squares in only one way, i.e., 12816400 + 71824 = 3580^2 + 268^2 .

It is a super-2 number, since 2×12888224² = 332212635748352, which contains 22 as substring.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201347 + ... + 201410.

Almost surely, 2^12888224 is an apocalyptic number.

It is an amenable number.

12888224 is a deficient number, since it is larger than the sum of its proper divisors (12485530).

12888224 is an equidigital number, since it uses as much as digits as its factorization.

12888224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402767 (or 402759 counting only the distinct ones).

The product of its digits is 16384, while the sum is 35.

The square root of 12888224 is about 3590.0172701534. The cubic root of 12888224 is about 234.4576234681.

The spelling of 12888224 in words is "twelve million, eight hundred eighty-eight thousand, two hundred twenty-four".