222444400 has 60 divisors (see below), whose sum is σ = 562569400. Its totient is φ = 84291840.

The previous prime is 222444379. The next prime is 222444421. The reversal of 222444400 is 4444222.

It is an interprime number because it is at equal distance from previous prime (222444379) and next prime (222444421).

It is a super-2 number, since 2×222444400² = 98963022182720000, which contains 22 as substring.

It is a zygodrome in base 10.

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 11 ways as a sum of consecutive naturals, for example, 7035 + ... + 22234.

Almost surely, 2^222444400 is an apocalyptic number.

222444400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222444400 is an abundant number, since it is smaller than the sum of its proper divisors (340125000).

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

222444400 is a wasteful number, since it uses less digits than its factorization.

222444400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29306 (or 29295 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

The square root of 222444400 is about 14914.5700574975. The cubic root of 222444400 is about 605.9086589485.

Adding to 222444400 its reverse (4444222), we get a palindrome (226888622).

The spelling of 222444400 in words is "two hundred twenty-two million, four hundred forty-four thousand, four hundred".