12078312 has 32 divisors (see below), whose sum is σ = 31510080. Its totient is φ = 3850880.

The previous prime is 12078299. The next prime is 12078323. The reversal of 12078312 is 21387021.

It is a Harshad number since it is a multiple of its sum of digits (24).

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 7 ways as a sum of consecutive naturals, for example, 10389 + ... + 11492.

It is an arithmetic number, because the mean of its divisors is an integer number (984690).

Almost surely, 2^12078312 is an apocalyptic number.

12078312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12078312 is an abundant number, since it is smaller than the sum of its proper divisors (19431768).

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

12078312 is a wasteful number, since it uses less digits than its factorization.

12078312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21913 (or 21909 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 12078312 is about 3475.3865972004. The cubic root of 12078312 is about 229.4397960565.

The spelling of 12078312 in words is "twelve million, seventy-eight thousand, three hundred twelve".