222226440 has 64 divisors (see below), whose sum is σ = 684711360. Its totient is φ = 57657600.

The previous prime is 222226429. The next prime is 222226493. The reversal of 222226440 is 44622222.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 222226440.

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, 20586 + ... + 29465.

It is an arithmetic number, because the mean of its divisors is an integer number (10698615).

Almost surely, 2^222226440 is an apocalyptic number.

222226440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222226440 is an abundant number, since it is smaller than the sum of its proper divisors (462484920).

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

222226440 is a wasteful number, since it uses less digits than its factorization.

222226440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50102 (or 50098 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 222226440 is about 14907.2613178947. The cubic root of 222226440 is about 605.7106963586.

Adding to 222226440 its reverse (44622222), we get a palindrome (266848662).

The spelling of 222226440 in words is "two hundred twenty-two million, two hundred twenty-six thousand, four hundred forty".