222431020 has 24 divisors (see below), whose sum is σ = 533834784. Its totient is φ = 76262016.

The previous prime is 222430979. The next prime is 222431029. The reversal of 222431020 is 20134222.

It is a junction number, because it is equal to n+sod(n) for n = 222430985 and 222431003.

It is not an unprimeable number, because it can be changed into a prime (222431029) 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, 794257 + ... + 794536.

It is an arithmetic number, because the mean of its divisors is an integer number (22243116).

Almost surely, 2^222431020 is an apocalyptic number.

222431020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222431020 is an abundant number, since it is smaller than the sum of its proper divisors (311403764).

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

222431020 is a wasteful number, since it uses less digits than its factorization.

222431020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1588809 (or 1588807 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 222431020 is about 14914.1214960855. The cubic root of 222431020 is about 605.8965102642.

Adding to 222431020 its reverse (20134222), we get a palindrome (242565242).

The spelling of 222431020 in words is "two hundred twenty-two million, four hundred thirty-one thousand, twenty".