224143220 has 24 divisors (see below), whose sum is σ = 537944064. Its totient is φ = 76849056.

The previous prime is 224143177. The next prime is 224143223. The reversal of 224143220 is 22341422.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 224143192 and 224143201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (224143223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 800372 + ... + 800651.

It is an arithmetic number, because the mean of its divisors is an integer number (22414336).

Almost surely, 2^224143220 is an apocalyptic number.

224143220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

224143220 is an abundant number, since it is smaller than the sum of its proper divisors (313800844).

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

224143220 is a wasteful number, since it uses less digits than its factorization.

224143220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1601039 (or 1601037 counting only the distinct ones).

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

The square root of 224143220 is about 14971.4134269280. The cubic root of 224143220 is about 607.4472014041.

Adding to 224143220 its reverse (22341422), we get a palindrome (246484642).

The spelling of 224143220 in words is "two hundred twenty-four million, one hundred forty-three thousand, two hundred twenty".