222415420 has 24 divisors (see below), whose sum is σ = 494547984. Its totient is φ = 83732736.

The previous prime is 222415363. The next prime is 222415423. The reversal of 222415420 is 24514222.

It is a junction number, because it is equal to n+sod(n) for n = 222415391 and 222415400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222415423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 326742 + ... + 327421.

It is an arithmetic number, because the mean of its divisors is an integer number (20606166).

Almost surely, 2^222415420 is an apocalyptic number.

222415420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222415420 is an abundant number, since it is smaller than the sum of its proper divisors (272132564).

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

222415420 is a wasteful number, since it uses less digits than its factorization.

222415420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654189 (or 654187 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 222415420 is about 14913.5984926509. The cubic root of 222415420 is about 605.8823452636.

Adding to 222415420 its reverse (24514222), we get a palindrome (246929642).

The spelling of 222415420 in words is "two hundred twenty-two million, four hundred fifteen thousand, four hundred twenty".