12994278 has 64 divisors (see below), whose sum is σ = 29859840. Its totient is φ = 3735200.

The previous prime is 12994249. The next prime is 12994297. The reversal of 12994278 is 87249921.

12994278 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 182983 + ... + 183053.

It is an arithmetic number, because the mean of its divisors is an integer number (466560).

Almost surely, 2^12994278 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12994278, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14929920).

12994278 is an abundant number, since it is smaller than the sum of its proper divisors (16865562).

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

12994278 is a wasteful number, since it uses less digits than its factorization.

12994278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193.

The product of its digits is 72576, while the sum is 42.

The square root of 12994278 is about 3604.7576894987. The cubic root of 12994278 is about 235.0989654091.

The spelling of 12994278 in words is "twelve million, nine hundred ninety-four thousand, two hundred seventy-eight".