222520430 has 32 divisors (see below), whose sum is σ = 437603040. Its totient is φ = 80795520.

The previous prime is 222520421. The next prime is 222520439. The reversal of 222520430 is 34025222.

222520430 = 219² + 220² + ... + 878².

222520430 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (222520421) and next prime (222520439).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222520439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108656 + ... + 110684.

It is an arithmetic number, because the mean of its divisors is an integer number (13675095).

Almost surely, 2^222520430 is an apocalyptic number.

222520430 is a deficient number, since it is larger than the sum of its proper divisors (215082610).

222520430 is a wasteful number, since it uses less digits than its factorization.

222520430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3044.

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

The square root of 222520430 is about 14917.1186896130. The cubic root of 222520430 is about 605.9776829201.

Adding to 222520430 its reverse (34025222), we get a palindrome (256545652).

The spelling of 222520430 in words is "two hundred twenty-two million, five hundred twenty thousand, four hundred thirty".