12215492 has 6 divisors (see below), whose sum is σ = 21377118. Its totient is φ = 6107744.

The previous prime is 12215477. The next prime is 12215527. The reversal of 12215492 is 29451221.

It can be written as a sum of positive squares in only one way, i.e., 11600836 + 614656 = 3406^2 + 784^2 .

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 as a sum of consecutive naturals, namely, 1526933 + ... + 1526940.

It is an arithmetic number, because the mean of its divisors is an integer number (3562853).

Almost surely, 2^12215492 is an apocalyptic number.

It is an amenable number.

12215492 is a deficient number, since it is larger than the sum of its proper divisors (9161626).

12215492 is a wasteful number, since it uses less digits than its factorization.

12215492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3053877 (or 3053875 counting only the distinct ones).

The product of its digits is 1440, while the sum is 26.

The square root of 12215492 is about 3495.0668090896. The cubic root of 12215492 is about 230.3051526155.

The spelling of 12215492 in words is "twelve million, two hundred fifteen thousand, four hundred ninety-two".