222531240 has 64 divisors (see below), whose sum is σ = 668736000. Its totient is φ = 59240192.

The previous prime is 222531223. The next prime is 222531247. The reversal of 222531240 is 42135222.

It is not an unprimeable number, because it can be changed into a prime (222531247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91561 + ... + 93959.

It is an arithmetic number, because the mean of its divisors is an integer number (10449000).

Almost surely, 2^222531240 is an apocalyptic number.

222531240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222531240 is an abundant number, since it is smaller than the sum of its proper divisors (446204760).

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

222531240 is a wasteful number, since it uses less digits than its factorization.

222531240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3186 (or 3182 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 222531240 is about 14917.4810206013. The cubic root of 222531240 is about 605.9874955213.

Adding to 222531240 its reverse (42135222), we get a palindrome (264666462).

The spelling of 222531240 in words is "two hundred twenty-two million, five hundred thirty-one thousand, two hundred forty".