220518232 has 24 divisors (see below), whose sum is σ = 451345140. Its totient is φ = 100172240.

The previous prime is 220518229. The next prime is 220518247. The reversal of 220518232 is 232815022.

220518232 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 220518197 and 220518206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 138513 + ... + 140095.

Almost surely, 2^220518232 is an apocalyptic number.

220518232 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

220518232 is an abundant number, since it is smaller than the sum of its proper divisors (230826908).

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

220518232 is an equidigital number, since it uses as much as digits as its factorization.

220518232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3183 (or 1596 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 220518232 is about 14849.8562956010. The cubic root of 220518232 is about 604.1547123522.

The spelling of 220518232 in words is "two hundred twenty million, five hundred eighteen thousand, two hundred thirty-two".