12278488 has 32 divisors (see below), whose sum is σ = 24591600. Its totient is φ = 5727232.

The previous prime is 12278479. The next prime is 12278491. The reversal of 12278488 is 88487221.

It is a super-2 number, since 2×12278488² = 301522535132288, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12278488.

It is a congruent 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, 18303 + ... + 18961.

Almost surely, 2^12278488 is an apocalyptic number.

It is an amenable number.

12278488 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

12278488 is a wasteful number, since it uses less digits than its factorization.

12278488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819 (or 815 counting only the distinct ones).

The product of its digits is 57344, while the sum is 40.

The square root of 12278488 is about 3504.0673509509. The cubic root of 12278488 is about 230.7003730059.

The spelling of 12278488 in words is "twelve million, two hundred seventy-eight thousand, four hundred eighty-eight".