220520216 has 16 divisors (see below), whose sum is σ = 472543440. Its totient is φ = 94508640.

The previous prime is 220520203. The next prime is 220520231. The reversal of 220520216 is 612025022.

220520216 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent 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, 1968875 + ... + 1968986.

It is an arithmetic number, because the mean of its divisors is an integer number (29533965).

Almost surely, 2^220520216 is an apocalyptic number.

It is an amenable number.

220520216 is an abundant number, since it is smaller than the sum of its proper divisors (252023224).

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

220520216 is a wasteful number, since it uses less digits than its factorization.

220520216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3937874 (or 3937870 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 220520216 is about 14849.9230974440. The cubic root of 220520216 is about 604.1565242044.

Adding to 220520216 its reverse (612025022), we get a palindrome (832545238).

The spelling of 220520216 in words is "two hundred twenty million, five hundred twenty thousand, two hundred sixteen".