220505500 has 24 divisors (see below), whose sum is σ = 481585104. Its totient is φ = 88202000.

The previous prime is 220505447. The next prime is 220505543. The reversal of 220505500 is 5505022.

It is a congruent number.

It is an unprimeable number.

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, 220006 + ... + 221005.

It is an arithmetic number, because the mean of its divisors is an integer number (20066046).

Almost surely, 2^220505500 is an apocalyptic number.

220505500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220505500 is an abundant number, since it is smaller than the sum of its proper divisors (261079604).

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

220505500 is a wasteful number, since it uses less digits than its factorization.

220505500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441030 (or 441018 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 19.

The square root of 220505500 is about 14849.4275983958. The cubic root of 220505500 is about 604.1430848240.

The spelling of 220505500 in words is "two hundred twenty million, five hundred five thousand, five hundred".