224752220 has 72 divisors (see below), whose sum is σ = 598978800. Its totient is φ = 70049280.

The previous prime is 224752211. The next prime is 224752267. The reversal of 224752220 is 22257422.

It is a self number, because there is not a number n which added to its sum of digits gives 224752220.

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, 356 + ... + 21204.

It is an arithmetic number, because the mean of its divisors is an integer number (8319150).

Almost surely, 2^224752220 is an apocalyptic number.

224752220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 224752220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (299489400).

224752220 is an abundant number, since it is smaller than the sum of its proper divisors (374226580).

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

224752220 is a wasteful number, since it uses less digits than its factorization.

224752220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20883 (or 20874 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 26.

The square root of 224752220 is about 14991.7383915275. The cubic root of 224752220 is about 607.9968511783.

The spelling of 224752220 in words is "two hundred twenty-four million, seven hundred fifty-two thousand, two hundred twenty".