12487878 has 32 divisors (see below), whose sum is σ = 29887200. Its totient is φ = 3842208.

The previous prime is 12487861. The next prime is 12487889. The reversal of 12487878 is 87878421.

12487878 is a modest number, since divided by 7878 gives 1248 as remainder.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8193 + ... + 9596.

It is an arithmetic number, because the mean of its divisors is an integer number (933975).

Almost surely, 2^12487878 is an apocalyptic number.

12487878 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12487878 is an abundant number, since it is smaller than the sum of its proper divisors (17399322).

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

12487878 is a wasteful number, since it uses less digits than its factorization.

12487878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17813 (or 17807 counting only the distinct ones).

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

The square root of 12487878 is about 3533.8191804335. The cubic root of 12487878 is about 232.0043969638.

The spelling of 12487878 in words is "twelve million, four hundred eighty-seven thousand, eight hundred seventy-eight".