222400404 has 48 divisors (see below), whose sum is σ = 583735040. Its totient is φ = 74130552.

The previous prime is 222400397. The next prime is 222400469. The reversal of 222400404 is 404004222.

222400404 is a `hidden beast` number, since 22 + 240 + 0 + 404 = 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 15 ways as a sum of consecutive naturals, for example, 3964 + ... + 21459.

Almost surely, 2^222400404 is an apocalyptic number.

It is an amenable number.

222400404 is an abundant number, since it is smaller than the sum of its proper divisors (361334636).

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

222400404 is an equidigital number, since it uses as much as digits as its factorization.

222400404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25448 (or 25428 counting only the distinct ones).

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

The square root of 222400404 is about 14913.0950509946. The cubic root of 222400404 is about 605.8687099170.

Adding to 222400404 its reverse (404004222), we get a palindrome (626404626).

The spelling of 222400404 in words is "two hundred twenty-two million, four hundred thousand, four hundred four".