222434420 has 36 divisors (see below), whose sum is σ = 505815660. Its totient is φ = 82128384.

The previous prime is 222434413. The next prime is 222434423. The reversal of 222434420 is 24434222.

It can be written as a sum of positive squares in 6 ways, for example, as 6990736 + 215443684 = 2644^2 + 14678^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222434423) 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 11 ways as a sum of consecutive naturals, for example, 29525 + ... + 36284.

It is an arithmetic number, because the mean of its divisors is an integer number (14050435).

Almost surely, 2^222434420 is an apocalyptic number.

222434420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222434420 is an abundant number, since it is smaller than the sum of its proper divisors (283381240).

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

222434420 is a wasteful number, since it uses less digits than its factorization.

222434420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65844 (or 65829 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 23.

The square root of 222434420 is about 14914.2354815793. The cubic root of 222434420 is about 605.8995974200.

Adding to 222434420 its reverse (24434222), we get a palindrome (246868642).

The spelling of 222434420 in words is "two hundred twenty-two million, four hundred thirty-four thousand, four hundred twenty".