12286878 has 8 divisors (see below), whose sum is σ = 24573768. Its totient is φ = 4095624.

The previous prime is 12286861. The next prime is 12286891. The reversal of 12286878 is 87868221.

It is a sphenic number, since it is the product of 3 distinct primes.

12286878 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1023901 + ... + 1023912.

It is an arithmetic number, because the mean of its divisors is an integer number (3071721).

Almost surely, 2^12286878 is an apocalyptic number.

12286878 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12286878 is a wasteful number, since it uses less digits than its factorization.

12286878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2047818.

The product of its digits is 86016, while the sum is 42.

The square root of 12286878 is about 3505.2643266949. The cubic root of 12286878 is about 230.7529075805.

The spelling of 12286878 in words is "twelve million, two hundred eighty-six thousand, eight hundred seventy-eight".