222023536 has 80 divisors (see below), whose sum is σ = 538626240. Its totient is φ = 86446080.

The previous prime is 222023509. The next prime is 222023537. The reversal of 222023536 is 635320222.

It is a self number, because there is not a number n which added to its sum of digits gives 222023536.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222023537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53206 + ... + 57226.

It is an arithmetic number, because the mean of its divisors is an integer number (6732828).

Almost surely, 2^222023536 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 222023536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (269313120).

222023536 is an abundant number, since it is smaller than the sum of its proper divisors (316602704).

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

222023536 is a wasteful number, since it uses less digits than its factorization.

222023536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4082 (or 4076 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 222023536 is about 14900.4542212645. The cubic root of 222023536 is about 605.5262920379.

Adding to 222023536 its reverse (635320222), we get a palindrome (857343758).

The spelling of 222023536 in words is "two hundred twenty-two million, twenty-three thousand, five hundred thirty-six".