220143444 has 24 divisors (see below), whose sum is σ = 514006080. Its totient is φ = 73332864.

The previous prime is 220143433. The next prime is 220143457. The reversal of 220143444 is 444341022.

It is a happy number.

It is a super-2 number, since 2×220143444² = 96926271872362272, which contains 22 as substring.

It is a congruent number.

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, 16252 + ... + 26540.

It is an arithmetic number, because the mean of its divisors is an integer number (21416920).

Almost surely, 2^220143444 is an apocalyptic number.

It is an amenable number.

220143444 is an abundant number, since it is smaller than the sum of its proper divisors (293862636).

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

220143444 is a wasteful number, since it uses less digits than its factorization.

220143444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12079 (or 12077 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 220143444 is about 14837.2316824939. The cubic root of 220143444 is about 603.8122488531.

Adding to 220143444 its reverse (444341022), we get a palindrome (664484466).

The spelling of 220143444 in words is "two hundred twenty million, one hundred forty-three thousand, four hundred forty-four".