222783264 has 144 divisors (see below), whose sum is σ = 714561120. Its totient is φ = 67478400.

The previous prime is 222783257. The next prime is 222783269. The reversal of 222783264 is 462387222.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (222783269) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 103479 + ... + 105609.

It is an arithmetic number, because the mean of its divisors is an integer number (4962230).

Almost surely, 2^222783264 is an apocalyptic number.

222783264 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222783264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (357280560).

222783264 is an abundant number, since it is smaller than the sum of its proper divisors (491777856).

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

222783264 is a wasteful number, since it uses less digits than its factorization.

222783264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2172 (or 2147 counting only the distinct ones).

The product of its digits is 64512, while the sum is 36.

The square root of 222783264 is about 14925.9259009282. The cubic root of 222783264 is about 606.2161761836.

It can be divided in two parts, 2227 and 83264, that added together give a triangular number (85491 = T₄₁₃).

The spelling of 222783264 in words is "two hundred twenty-two million, seven hundred eighty-three thousand, two hundred sixty-four".