220403144 has 16 divisors (see below), whose sum is σ = 445045020. Its totient is φ = 101724480.

The previous prime is 220403143. The next prime is 220403189. The reversal of 220403144 is 441304022.

220403144 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 214974244 + 5428900 = 14662^2 + 2330^2 .

It is not an unprimeable number, because it can be changed into a prime (220403143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1059527 + ... + 1059734.

Almost surely, 2^220403144 is an apocalyptic number.

It is an amenable number.

220403144 is an abundant number, since it is smaller than the sum of its proper divisors (224641876).

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

220403144 is a wasteful number, since it uses less digits than its factorization.

220403144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2119280 (or 2119276 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 220403144 is about 14845.9807355392. The cubic root of 220403144 is about 604.0495917061.

Adding to 220403144 its reverse (441304022), we get a palindrome (661707166).

The spelling of 220403144 in words is "two hundred twenty million, four hundred three thousand, one hundred forty-four".