220164812 has 12 divisors (see below), whose sum is σ = 440329680. Its totient is φ = 94356336.

The previous prime is 220164797. The next prime is 220164851. The reversal of 220164812 is 218461022.

It is a happy number.

220164812 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3931487 + ... + 3931542.

It is an arithmetic number, because the mean of its divisors is an integer number (36694140).

Almost surely, 2^220164812 is an apocalyptic number.

It is an amenable number.

220164812 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

220164812 is a wasteful number, since it uses less digits than its factorization.

220164812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7863040 (or 7863038 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 220164812 is about 14837.9517454398. The cubic root of 220164812 is about 603.8317843621.

The spelling of 220164812 in words is "two hundred twenty million, one hundred sixty-four thousand, eight hundred twelve".