12278984 has 8 divisors (see below), whose sum is σ = 23023110. Its totient is φ = 6139488.

The previous prime is 12278983. The next prime is 12278989. The reversal of 12278984 is 48987221.

It can be written as a sum of positive squares in only one way, i.e., 8584900 + 3694084 = 2930^2 + 1922^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (12278983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 767429 + ... + 767444.

Almost surely, 2^12278984 is an apocalyptic number.

It is an amenable number.

12278984 is a deficient number, since it is larger than the sum of its proper divisors (10744126).

12278984 is a wasteful number, since it uses less digits than its factorization.

12278984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1534879 (or 1534875 counting only the distinct ones).

The product of its digits is 64512, while the sum is 41.

The square root of 12278984 is about 3504.1381251315. The cubic root of 12278984 is about 230.7034794102.

The spelling of 12278984 in words is "twelve million, two hundred seventy-eight thousand, nine hundred eighty-four".