218132766 has 12 divisors (see below), whose sum is σ = 472621032. Its totient is φ = 72710916.

The previous prime is 218132741. The next prime is 218132773. The reversal of 218132766 is 667231812.

It is a self number, because there is not a number n which added to its sum of digits gives 218132766.

It is a congruent number.

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 in 5 ways as a sum of consecutive naturals, for example, 6059226 + ... + 6059261.

It is an arithmetic number, because the mean of its divisors is an integer number (39385086).

Almost surely, 2^218132766 is an apocalyptic number.

218132766 is an abundant number, since it is smaller than the sum of its proper divisors (254488266).

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

218132766 is a wasteful number, since it uses less digits than its factorization.

218132766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12118495 (or 12118492 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 218132766 is about 14769.3183999804. The cubic root of 218132766 is about 601.9683191387.

The spelling of 218132766 in words is "two hundred eighteen million, one hundred thirty-two thousand, seven hundred sixty-six".