12166458 has 32 divisors (see below), whose sum is σ = 25945920. Its totient is φ = 3790080.

The previous prime is 12166447. The next prime is 12166459. The reversal of 12166458 is 85466121.

It is not an unprimeable number, because it can be changed into a prime (12166459) 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 in 15 ways as a sum of consecutive naturals, for example, 18133 + ... + 18791.

It is an arithmetic number, because the mean of its divisors is an integer number (810810).

Almost surely, 2^12166458 is an apocalyptic number.

12166458 is an abundant number, since it is smaller than the sum of its proper divisors (13779462).

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

12166458 is a wasteful number, since it uses less digits than its factorization.

12166458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 862.

The product of its digits is 11520, while the sum is 33.

The square root of 12166458 is about 3488.0450111775. The cubic root of 12166458 is about 229.9965847004.

The spelling of 12166458 in words is "twelve million, one hundred sixty-six thousand, four hundred fifty-eight".