12878394 has 16 divisors (see below), whose sum is σ = 25816320. Its totient is φ = 4282880.

The previous prime is 12878377. The next prime is 12878431. The reversal of 12878394 is 49387821.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 634 + ... + 5114.

It is an arithmetic number, because the mean of its divisors is an integer number (1613520).

Almost surely, 2^12878394 is an apocalyptic number.

12878394 is an abundant number, since it is smaller than the sum of its proper divisors (12937926).

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

12878394 is a wasteful number, since it uses less digits than its factorization.

12878394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4965.

The product of its digits is 96768, while the sum is 42.

The square root of 12878394 is about 3588.6479348078. The cubic root of 12878394 is about 234.3980004450.

The spelling of 12878394 in words is "twelve million, eight hundred seventy-eight thousand, three hundred ninety-four".