220444244240 has 40 divisors (see below), whose sum is σ = 559126767168. Its totient is φ = 80161543040.

The previous prime is 220444244219. The next prime is 220444244327. The reversal of 220444244240 is 42442444022.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 220444244197 and 220444244206.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125251532 + ... + 125253291.

Almost surely, 2^220444244240 is an apocalyptic number.

220444244240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220444244240 is an abundant number, since it is smaller than the sum of its proper divisors (338682522928).

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

220444244240 is a wasteful number, since it uses less digits than its factorization.

220444244240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250504847 (or 250504841 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 32.

Adding to 220444244240 its reverse (42442444022), we get a palindrome (262886688262).

The spelling of 220444244240 in words is "two hundred twenty billion, four hundred forty-four million, two hundred forty-four thousand, two hundred forty".