222322440 has 32 divisors (see below), whose sum is σ = 666967680. Its totient is φ = 59285952.

The previous prime is 222322433. The next prime is 222322469. The reversal of 222322440 is 44223222.

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 7 ways as a sum of consecutive naturals, for example, 926224 + ... + 926463.

It is an arithmetic number, because the mean of its divisors is an integer number (20842740).

Almost surely, 2^222322440 is an apocalyptic number.

222322440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222322440 is an abundant number, since it is smaller than the sum of its proper divisors (444645240).

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

222322440 is a wasteful number, since it uses less digits than its factorization.

222322440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1852701 (or 1852697 counting only the distinct ones).

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

The square root of 222322440 is about 14910.4808775572. The cubic root of 222322440 is about 605.7979044869.

Adding to 222322440 its reverse (44223222), we get a palindrome (266545662).

The spelling of 222322440 in words is "two hundred twenty-two million, three hundred twenty-two thousand, four hundred forty".