12678456 has 48 divisors (see below), whose sum is σ = 36874440. Its totient is φ = 3622080.

The previous prime is 12678443. The next prime is 12678461. The reversal of 12678456 is 65487621.

It is a super-3 number, since 3×12678456³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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, 4215 + ... + 6566.

Almost surely, 2^12678456 is an apocalyptic number.

It is an amenable number.

12678456 is an abundant number, since it is smaller than the sum of its proper divisors (24195984).

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

12678456 is a wasteful number, since it uses less digits than its factorization.

12678456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10804 (or 10793 counting only the distinct ones).

The product of its digits is 80640, while the sum is 39.

The square root of 12678456 is about 3560.6819571537. The cubic root of 12678456 is about 233.1786530382.

The spelling of 12678456 in words is "twelve million, six hundred seventy-eight thousand, four hundred fifty-six".