222423732 has 84 divisors (see below), whose sum is σ = 591269280. Its totient is φ = 73168272.

The previous prime is 222423713. The next prime is 222423739. The reversal of 222423732 is 237324222.

It is a happy number.

222423732 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 222423696 and 222423705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222423739) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 241569 + ... + 242487.

It is an arithmetic number, because the mean of its divisors is an integer number (7038920).

Almost surely, 2^222423732 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222423732, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (295634640).

222423732 is an abundant number, since it is smaller than the sum of its proper divisors (368845548).

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

222423732 is an equidigital number, since it uses as much as digits as its factorization.

222423732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1024 (or 1007 counting only the distinct ones).

The product of its digits is 8064, while the sum is 27.

The square root of 222423732 is about 14913.8771618919. The cubic root of 222423732 is about 605.8898927489.

Adding to 222423732 its reverse (237324222), we get a palindrome (459747954).

The spelling of 222423732 in words is "two hundred twenty-two million, four hundred twenty-three thousand, seven hundred thirty-two".