222432240 has 80 divisors (see below), whose sum is σ = 725846400. Its totient is φ = 56192256.

The previous prime is 222432239. The next prime is 222432263. The reversal of 222432240 is 42234222.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×222432240² = 98952202782835200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19830 + ... + 28949.

It is an arithmetic number, because the mean of its divisors is an integer number (9073080).

Almost surely, 2^222432240 is an apocalyptic number.

222432240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222432240 is an abundant number, since it is smaller than the sum of its proper divisors (503414160).

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

222432240 is a wasteful number, since it uses less digits than its factorization.

222432240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48814 (or 48808 counting only the distinct ones).

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

The square root of 222432240 is about 14914.1623968629. The cubic root of 222432240 is about 605.8976180119.

Adding to 222432240 its reverse (42234222), we get a palindrome (264666462).

The spelling of 222432240 in words is "two hundred twenty-two million, four hundred thirty-two thousand, two hundred forty".