12738078 has 12 divisors (see below), whose sum is σ = 27599208. Its totient is φ = 4246020.

The previous prime is 12738059. The next prime is 12738119. The reversal of 12738078 is 87083721.

12738078 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 a super-2 number, since 2×12738078² = 324517262268168, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 353818 + ... + 353853.

It is an arithmetic number, because the mean of its divisors is an integer number (2299934).

Almost surely, 2^12738078 is an apocalyptic number.

12738078 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12738078 is an abundant number, since it is smaller than the sum of its proper divisors (14861130).

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

12738078 is a wasteful number, since it uses less digits than its factorization.

12738078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 707679 (or 707676 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 36.

The square root of 12738078 is about 3569.0444099226. The cubic root of 12738078 is about 233.5435986738.

The spelling of 12738078 in words is "twelve million, seven hundred thirty-eight thousand, seventy-eight".