222944840 has 16 divisors (see below), whose sum is σ = 501625980. Its totient is φ = 89177920.

The previous prime is 222944807. The next prime is 222944849. The reversal of 222944840 is 48449222.

222944840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 213568996 + 9375844 = 14614^2 + 3062^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 222944840.

It is not an unprimeable number, because it can be changed into a prime (222944849) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2786771 + ... + 2786850.

Almost surely, 2^222944840 is an apocalyptic number.

222944840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222944840 is an abundant number, since it is smaller than the sum of its proper divisors (278681140).

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

222944840 is a wasteful number, since it uses less digits than its factorization.

222944840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5573632 (or 5573628 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 35.

The square root of 222944840 is about 14931.3375154405. The cubic root of 222944840 is about 606.3626957394.

The spelling of 222944840 in words is "two hundred twenty-two million, nine hundred forty-four thousand, eight hundred forty".