220515020 has 24 divisors (see below), whose sum is σ = 505180368. Its totient is φ = 80187200.

The previous prime is 220515019. The next prime is 220515049. The reversal of 220515020 is 20515022.

It is a self number, because there is not a number n which added to its sum of digits gives 220515020.

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, 500951 + ... + 501390.

It is an arithmetic number, because the mean of its divisors is an integer number (21049182).

Almost surely, 2^220515020 is an apocalyptic number.

220515020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220515020 is an abundant number, since it is smaller than the sum of its proper divisors (284665348).

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

220515020 is a wasteful number, since it uses less digits than its factorization.

220515020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1002361 (or 1002359 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 220515020 is about 14849.7481460124. The cubic root of 220515020 is about 604.1517790280.

The spelling of 220515020 in words is "two hundred twenty million, five hundred fifteen thousand, twenty".