222504520 has 32 divisors (see below), whose sum is σ = 572155200. Its totient is φ = 76287168.

The previous prime is 222504463. The next prime is 222504523. The reversal of 222504520 is 25405222.

It is a happy number.

It is a super-2 number, since 2×222504520² = 99016522840860800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 222504491 and 222504500.

It is not an unprimeable number, because it can be changed into a prime (222504523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 397050 + ... + 397609.

It is an arithmetic number, because the mean of its divisors is an integer number (17879850).

Almost surely, 2^222504520 is an apocalyptic number.

222504520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222504520 is an abundant number, since it is smaller than the sum of its proper divisors (349650680).

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

222504520 is a wasteful number, since it uses less digits than its factorization.

222504520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794677 (or 794673 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 222504520 is about 14916.5854001511. The cubic root of 222504520 is about 605.9632402991.

Adding to 222504520 its reverse (25405222), we get a palindrome (247909742).

The spelling of 222504520 in words is "two hundred twenty-two million, five hundred four thousand, five hundred twenty".