220244240 has 40 divisors (see below), whose sum is σ = 512996928. Its totient is φ = 87937920.

The previous prime is 220244207. The next prime is 220244261. The reversal of 220244240 is 42442022.

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

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 48299 + ... + 52661.

Almost surely, 2^220244240 is an apocalyptic number.

220244240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220244240 is an abundant number, since it is smaller than the sum of its proper divisors (292752688).

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

220244240 is a wasteful number, since it uses less digits than its factorization.

220244240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5007 (or 5001 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

The square root of 220244240 is about 14840.6280190563. The cubic root of 220244240 is about 603.9043896437.

Adding to 220244240 its reverse (42442022), we get a palindrome (262686262).

The spelling of 220244240 in words is "two hundred twenty million, two hundred forty-four thousand, two hundred forty".