12488778 has 24 divisors (see below), whose sum is σ = 28651428. Its totient is φ = 3917952.

The previous prime is 12488759. The next prime is 12488779. The reversal of 12488778 is 87788421.

It can be written as a sum of positive squares in 2 ways, for example, as 9345249 + 3143529 = 3057^2 + 1773^2 .

It is not an unprimeable number, because it can be changed into a prime (12488779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20101 + ... + 20712.

Almost surely, 2^12488778 is an apocalyptic number.

12488778 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12488778 is an abundant number, since it is smaller than the sum of its proper divisors (16162650).

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

12488778 is a wasteful number, since it uses less digits than its factorization.

12488778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40838 (or 40835 counting only the distinct ones).

The product of its digits is 200704, while the sum is 45.

The square root of 12488778 is about 3533.9465191199. The cubic root of 12488778 is about 232.0099703404.

The spelling of 12488778 in words is "twelve million, four hundred eighty-eight thousand, seven hundred seventy-eight".