222423432 has 128 divisors (see below), whose sum is σ = 723548160. Its totient is φ = 55249920.

The previous prime is 222423407. The next prime is 222423433. The reversal of 222423432 is 234324222.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (222423433) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39888 + ... + 45120.

It is an arithmetic number, because the mean of its divisors is an integer number (5652720).

Almost surely, 2^222423432 is an apocalyptic number.

222423432 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222423432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (361774080).

222423432 is an abundant number, since it is smaller than the sum of its proper divisors (501124728).

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

222423432 is a wasteful number, since it uses less digits than its factorization.

222423432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5283 (or 5279 counting only the distinct ones).

The product of its digits is 4608, while the sum is 24.

The square root of 222423432 is about 14913.8671041417. The cubic root of 222423432 is about 605.8896203454.

Adding to 222423432 its reverse (234324222), we get a palindrome (456747654).

The spelling of 222423432 in words is "two hundred twenty-two million, four hundred twenty-three thousand, four hundred thirty-two".