222424140 has 24 divisors (see below), whose sum is σ = 622787760. Its totient is φ = 59313088.

The previous prime is 222424087. The next prime is 222424151. The reversal of 222424140 is 41424222.

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 7 ways as a sum of consecutive naturals, for example, 1853475 + ... + 1853594.

It is an arithmetic number, because the mean of its divisors is an integer number (25949490).

Almost surely, 2^222424140 is an apocalyptic number.

222424140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222424140 is an abundant number, since it is smaller than the sum of its proper divisors (400363620).

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

222424140 is a wasteful number, since it uses less digits than its factorization.

222424140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3707081 (or 3707079 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 222424140 is about 14913.8908404212. The cubic root of 222424140 is about 605.8902632174.

Adding to 222424140 its reverse (41424222), we get a palindrome (263848362).

The spelling of 222424140 in words is "two hundred twenty-two million, four hundred twenty-four thousand, one hundred forty".