222418404 has 72 divisors (see below), whose sum is σ = 610067640. Its totient is φ = 67917312.

The previous prime is 222418367. The next prime is 222418423. The reversal of 222418404 is 404814222.

222418404 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 4 ways, for example, as 1004004 + 221414400 = 1002^2 + 14880^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 62382 + ... + 65850.

Almost surely, 2^222418404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222418404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (305033820).

222418404 is an abundant number, since it is smaller than the sum of its proper divisors (387649236).

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

222418404 is a wasteful number, since it uses less digits than its factorization.

222418404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3629 (or 3624 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 27.

The square root of 222418404 is about 14913.6985352393. The cubic root of 222418404 is about 605.8850548252.

The spelling of 222418404 in words is "two hundred twenty-two million, four hundred eighteen thousand, four hundred four".