220344420 has 48 divisors (see below), whose sum is σ = 623911680. Its totient is φ = 58096896.

The previous prime is 220344419. The next prime is 220344437. The reversal of 220344420 is 24443022.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15292 + ... + 25971.

It is an arithmetic number, because the mean of its divisors is an integer number (12998160).

Almost surely, 2^220344420 is an apocalyptic number.

220344420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220344420 is an abundant number, since it is smaller than the sum of its proper divisors (403567260).

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

220344420 is a wasteful number, since it uses less digits than its factorization.

220344420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41364 (or 41362 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 220344420 is about 14844.0028294258. The cubic root of 220344420 is about 603.9959394783.

Adding to 220344420 its reverse (24443022), we get a palindrome (244787442).

The spelling of 220344420 in words is "two hundred twenty million, three hundred forty-four thousand, four hundred twenty".