224218644 has 96 divisors (see below), whose sum is σ = 607098240. Its totient is φ = 63787008.

The previous prime is 224218609. The next prime is 224218667. The reversal of 224218644 is 446812422.

224218644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 155752 + ... + 157184.

It is an arithmetic number, because the mean of its divisors is an integer number (6323940).

Almost surely, 2^224218644 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 224218644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (303549120).

224218644 is an abundant number, since it is smaller than the sum of its proper divisors (382879596).

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

224218644 is a wasteful number, since it uses less digits than its factorization.

224218644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1529 (or 1527 counting only the distinct ones).

The product of its digits is 24576, while the sum is 33.

The square root of 224218644 is about 14973.9321489046. The cubic root of 224218644 is about 607.5153289160.

The spelling of 224218644 in words is "two hundred twenty-four million, two hundred eighteen thousand, six hundred forty-four".