220444445 has 24 divisors (see below), whose sum is σ = 293157216. Its totient is φ = 158977728.

The previous prime is 220444417. The next prime is 220444453. The reversal of 220444445 is 544444022.

It is not a de Polignac number, because 220444445 - 2⁶ = 220444381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33302 + ... + 39368.

It is an arithmetic number, because the mean of its divisors is an integer number (12214884).

Almost surely, 2^220444445 is an apocalyptic number.

It is an amenable number.

220444445 is a deficient number, since it is larger than the sum of its proper divisors (72712771).

220444445 is a wasteful number, since it uses less digits than its factorization.

220444445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6141 (or 6128 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 29.

The square root of 220444445 is about 14847.3716529223. The cubic root of 220444445 is about 604.0873199853.

Adding to 220444445 its reverse (544444022), we get a palindrome (764888467).

The spelling of 220444445 in words is "two hundred twenty million, four hundred forty-four thousand, four hundred forty-five".