220247944 has 96 divisors (see below), whose sum is σ = 498636000. Its totient is φ = 90892032.

The previous prime is 220247927. The next prime is 220247947. The reversal of 220247944 is 449742022.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (220247947) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2058339 + ... + 2058445.

It is an arithmetic number, because the mean of its divisors is an integer number (5194125).

Almost surely, 2^220247944 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220247944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (249318000).

220247944 is an abundant number, since it is smaller than the sum of its proper divisors (278388056).

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

220247944 is a wasteful number, since it uses less digits than its factorization.

220247944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275 (or 264 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 34.

The square root of 220247944 is about 14840.7528110942. The cubic root of 220247944 is about 603.9077750509.

Adding to 220247944 its reverse (449742022), we get a palindrome (669989966).

The spelling of 220247944 in words is "two hundred twenty million, two hundred forty-seven thousand, nine hundred forty-four".