222040440 has 80 divisors (see below), whose sum is σ = 746313480. Its totient is φ = 59209920.

The previous prime is 222040411. The next prime is 222040457. The reversal of 222040440 is 44040222.

222040440 is a `hidden beast` number, since 2 + 220 + 4 + 0 + 440 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

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 19 ways as a sum of consecutive naturals, for example, 31026 + ... + 37505.

Almost surely, 2^222040440 is an apocalyptic number.

222040440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222040440 is an abundant number, since it is smaller than the sum of its proper divisors (524273040).

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

222040440 is a wasteful number, since it uses less digits than its factorization.

222040440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68554 (or 68541 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 222040440 is about 14901.0214414986. The cubic root of 222040440 is about 605.5416591124.

Adding to 222040440 its reverse (44040222), we get a palindrome (266080662).

The spelling of 222040440 in words is "two hundred twenty-two million, forty thousand, four hundred forty".