222440000 has 140 divisors (see below), whose sum is σ = 566556144. Its totient is φ = 86592000.

The previous prime is 222439999. The next prime is 222440003. The reversal of 222440000 is 44222.

It is a happy number.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (222440003) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2679959 + ... + 2680041.

Almost surely, 2^222440000 is an apocalyptic number.

222440000 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 222440000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (283278072).

222440000 is an abundant number, since it is smaller than the sum of its proper divisors (344116144).

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

222440000 is an frugal number, since it uses more digits than its factorization.

222440000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182 (or 157 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 222440000 is about 14914.4225500017. The cubic root of 222440000 is about 605.9046639192.

Adding to 222440000 its reverse (44222), we get a palindrome (222484222).

It can be divided in two parts, 2224 and 40000, that added together give a palindrome (42224).

The spelling of 222440000 in words is "two hundred twenty-two million, four hundred forty thousand".