222424200 has 144 divisors (see below), whose sum is σ = 772913700. Its totient is φ = 57254400.

The previous prime is 222424193. The next prime is 222424247. The reversal of 222424200 is 2424222.

222424200 is a `hidden beast` number, since 2 + 2 + 242 + 420 + 0 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 148498596 + 73925604 = 12186^2 + 8598^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 50070 + ... + 54330.

Almost surely, 2^222424200 is an apocalyptic number.

222424200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222424200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (386456850).

222424200 is an abundant number, since it is smaller than the sum of its proper divisors (550489500).

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

222424200 is a wasteful number, since it uses less digits than its factorization.

222424200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4312 (or 4300 counting only the distinct ones).

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

The square root of 222424200 is about 14913.8928519686. The cubic root of 222424200 is about 605.8903176980.

Adding to 222424200 its reverse (2424222), we get a palindrome (224848422).

The spelling of 222424200 in words is "two hundred twenty-two million, four hundred twenty-four thousand, two hundred".