12678378 has 32 divisors (see below), whose sum is σ = 26195136. Its totient is φ = 4088448.

The previous prime is 12678371. The next prime is 12678427. The reversal of 12678378 is 87387621.

12678378 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (12678371) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40350 + ... + 40662.

It is an arithmetic number, because the mean of its divisors is an integer number (818598).

Almost surely, 2^12678378 is an apocalyptic number.

12678378 is an abundant number, since it is smaller than the sum of its proper divisors (13516758).

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

12678378 is a wasteful number, since it uses less digits than its factorization.

12678378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 518.

The product of its digits is 112896, while the sum is 42.

The square root of 12678378 is about 3560.6710041788. The cubic root of 12678378 is about 233.1781748525.

The spelling of 12678378 in words is "twelve million, six hundred seventy-eight thousand, three hundred seventy-eight".