12688424 has 32 divisors (see below), whose sum is σ = 28070400. Its totient is φ = 5261760.

The previous prime is 12688411. The next prime is 12688441. The reversal of 12688424 is 42488621.

It is a super-2 number, since 2×12688424² = 321992207207552, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1919 + ... + 5390.

It is an arithmetic number, because the mean of its divisors is an integer number (877200).

Almost surely, 2^12688424 is an apocalyptic number.

12688424 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12688424 is an abundant number, since it is smaller than the sum of its proper divisors (15381976).

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

12688424 is a wasteful number, since it uses less digits than its factorization.

12688424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7353 (or 7349 counting only the distinct ones).

The product of its digits is 24576, while the sum is 35.

The square root of 12688424 is about 3562.0814140050. The cubic root of 12688424 is about 233.2397465957.

The spelling of 12688424 in words is "twelve million, six hundred eighty-eight thousand, four hundred twenty-four".