12082278 has 32 divisors (see below), whose sum is σ = 26191872. Its totient is φ = 3693600.

The previous prime is 12082247. The next prime is 12082307. The reversal of 12082278 is 87228021.

It is a happy number.

12082278 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14493 + ... + 15303.

It is an arithmetic number, because the mean of its divisors is an integer number (818496).

Almost surely, 2^12082278 is an apocalyptic number.

12082278 is an abundant number, since it is smaller than the sum of its proper divisors (14109594).

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

12082278 is a wasteful number, since it uses less digits than its factorization.

12082278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1020.

The product of its (nonzero) digits is 3584, while the sum is 30.

The square root of 12082278 is about 3475.9571343732. The cubic root of 12082278 is about 229.4649060402.

It can be divided in two parts, 1208227 and 8, that added together give a triangular number (1208235 = T₁₅₅₄).

The spelling of 12082278 in words is "twelve million, eighty-two thousand, two hundred seventy-eight".