220235220 has 48 divisors (see below), whose sum is σ = 685177920. Its totient is φ = 58729248.

The previous prime is 220235209. The next prime is 220235237. The reversal of 220235220 is 22532022.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 220235193 and 220235202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 203382 + ... + 204461.

It is an arithmetic number, because the mean of its divisors is an integer number (14274540).

Almost surely, 2^220235220 is an apocalyptic number.

220235220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220235220 is an abundant number, since it is smaller than the sum of its proper divisors (464942700).

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

220235220 is a wasteful number, since it uses less digits than its factorization.

220235220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407861 (or 407853 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 220235220 is about 14840.3241204497. The cubic root of 220235220 is about 603.8961453237.

Adding to 220235220 its reverse (22532022), we get a palindrome (242767242).

The spelling of 220235220 in words is "two hundred twenty million, two hundred thirty-five thousand, two hundred twenty".