220561444 has 24 divisors (see below), whose sum is σ = 403865280. Its totient is φ = 105197664.

The previous prime is 220561441. The next prime is 220561457. The reversal of 220561444 is 444165022.

It is not an unprimeable number, because it can be changed into a prime (220561441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32707 + ... + 38869.

It is an arithmetic number, because the mean of its divisors is an integer number (16827720).

Almost surely, 2^220561444 is an apocalyptic number.

It is an amenable number.

220561444 is a deficient number, since it is larger than the sum of its proper divisors (183303836).

220561444 is a wasteful number, since it uses less digits than its factorization.

220561444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6579 (or 6577 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 220561444 is about 14851.3111879053. The cubic root of 220561444 is about 604.1941724732.

The spelling of 220561444 in words is "two hundred twenty million, five hundred sixty-one thousand, four hundred forty-four".