220406168 has 16 divisors (see below), whose sum is σ = 418241880. Its totient is φ = 108875008.

The previous prime is 220406167. The next prime is 220406183. The reversal of 220406168 is 861604022.

It is a self number, because there is not a number n which added to its sum of digits gives 220406168.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220406167) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 165305 + ... + 166632.

Almost surely, 2^220406168 is an apocalyptic number.

It is an amenable number.

220406168 is a deficient number, since it is larger than the sum of its proper divisors (197835712).

220406168 is a wasteful number, since it uses less digits than its factorization.

220406168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332026 (or 332022 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 220406168 is about 14846.0825809370. The cubic root of 220406168 is about 604.0523542765.

The spelling of 220406168 in words is "two hundred twenty million, four hundred six thousand, one hundred sixty-eight".