223024520 has 16 divisors (see below), whose sum is σ = 501805260. Its totient is φ = 89209792.

The previous prime is 223024519. The next prime is 223024553. The reversal of 223024520 is 25420322.

It can be written as a sum of positive squares in 2 ways, for example, as 208109476 + 14915044 = 14426^2 + 3862^2 .

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 = 223024492 and 223024501.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2787767 + ... + 2787846.

Almost surely, 2^223024520 is an apocalyptic number.

223024520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223024520 is an abundant number, since it is smaller than the sum of its proper divisors (278780740).

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

223024520 is a wasteful number, since it uses less digits than its factorization.

223024520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5575624 (or 5575620 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 223024520 is about 14934.0054908253. The cubic root of 223024520 is about 606.4349247040.

Adding to 223024520 its reverse (25420322), we get a palindrome (248444842).

The spelling of 223024520 in words is "two hundred twenty-three million, twenty-four thousand, five hundred twenty".