180866286 has 24 divisors (see below), whose sum is σ = 402469704. Its totient is φ = 58659120.

The previous prime is 180866269. The next prime is 180866311. The reversal of 180866286 is 682668081.

180866286 is a `hidden beast` number, since 18 + 0 + 8 + 6 + 628 + 6 = 666.

It is a super-2 number, since 2×180866286² = 65425226822867592, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 135120 + ... + 136451.

It is an arithmetic number, because the mean of its divisors is an integer number (16769571).

Almost surely, 2^180866286 is an apocalyptic number.

180866286 is an abundant number, since it is smaller than the sum of its proper divisors (221603418).

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

180866286 is a wasteful number, since it uses less digits than its factorization.

180866286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271616 (or 271613 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The square root of 180866286 is about 13448.6536872655. The cubic root of 180866286 is about 565.5259529304.

The spelling of 180866286 in words is "one hundred eighty million, eight hundred sixty-six thousand, two hundred eighty-six".