220518804 has 24 divisors (see below), whose sum is σ = 561320928. Its totient is φ = 66823840.

The previous prime is 220518803. The next prime is 220518817. The reversal of 220518804 is 408815022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220518803) 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 7 ways as a sum of consecutive naturals, for example, 835167 + ... + 835430.

It is an arithmetic number, because the mean of its divisors is an integer number (23388372).

Almost surely, 2^220518804 is an apocalyptic number.

It is an amenable number.

220518804 is an abundant number, since it is smaller than the sum of its proper divisors (340802124).

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

220518804 is a wasteful number, since it uses less digits than its factorization.

220518804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1670615 (or 1670613 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 220518804 is about 14849.8755550341. The cubic root of 220518804 is about 604.1552347220.

The spelling of 220518804 in words is "two hundred twenty million, five hundred eighteen thousand, eight hundred four".