12678870 has 32 divisors (see below), whose sum is σ = 30750048. Its totient is φ = 3345408.

The previous prime is 12678863. The next prime is 12678893. The reversal of 12678870 is 7887621.

Added to its reverse (7887621) it gives a triangular number (20566491 = T₆₄₁₃).

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, 732 + ... + 5088.

It is an arithmetic number, because the mean of its divisors is an integer number (960939).

Almost surely, 2^12678870 is an apocalyptic number.

12678870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12678870 is an abundant number, since it is smaller than the sum of its proper divisors (18071178).

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

12678870 is a wasteful number, since it uses less digits than its factorization.

12678870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4464.

The product of its (nonzero) digits is 37632, while the sum is 39.

The square root of 12678870 is about 3560.7400916102. The cubic root of 12678870 is about 233.1811910684.

Adding to 12678870 its reverse (7887621), we get a triangular number (20566491 = T₆₄₁₃).

The spelling of 12678870 in words is "twelve million, six hundred seventy-eight thousand, eight hundred seventy".