222432420 has 96 divisors (see below), whose sum is σ = 753677568. Its totient is φ = 47849472.

The previous prime is 222432391. The next prime is 222432433. The reversal of 222432420 is 24234222.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8437 + ... + 22716.

It is an arithmetic number, because the mean of its divisors is an integer number (7850808).

Almost surely, 2^222432420 is an apocalyptic number.

222432420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222432420 is an abundant number, since it is smaller than the sum of its proper divisors (531245148).

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

222432420 is a wasteful number, since it uses less digits than its factorization.

222432420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31189 (or 31187 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 222432420 is about 14914.1684313944. The cubic root of 222432420 is about 605.8977814498.

Adding to 222432420 its reverse (24234222), we get a palindrome (246666642).

The spelling of 222432420 in words is "two hundred twenty-two million, four hundred thirty-two thousand, four hundred twenty".