222530240 has 28 divisors (see below), whose sum is σ = 529900896. Its totient is φ = 89011968.

The previous prime is 222530227. The next prime is 222530251. The reversal of 222530240 is 42035222.

222530240 is digitally balanced in base 3, 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 (20).

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 347384 + ... + 348023.

It is an arithmetic number, because the mean of its divisors is an integer number (18925032).

Almost surely, 2^222530240 is an apocalyptic number.

222530240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222530240 is an abundant number, since it is smaller than the sum of its proper divisors (307370656).

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

222530240 is an equidigital number, since it uses as much as digits as its factorization.

222530240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 695424 (or 695414 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 222530240 is about 14917.4475028404. The cubic root of 222530240 is about 605.9865878009.

Adding to 222530240 its reverse (42035222), we get a palindrome (264565462).

The spelling of 222530240 in words is "two hundred twenty-two million, five hundred thirty thousand, two hundred forty".