222304340 has 24 divisors (see below), whose sum is σ = 467124840. Its totient is φ = 88867328.

The previous prime is 222304339. The next prime is 222304349. The reversal of 222304340 is 43403222.

It can be written as a sum of positive squares in 4 ways, for example, as 32581264 + 189723076 = 5708^2 + 13774^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222304349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52544 + ... + 56616.

It is an arithmetic number, because the mean of its divisors is an integer number (19463535).

Almost surely, 2^222304340 is an apocalyptic number.

222304340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222304340 is an abundant number, since it is smaller than the sum of its proper divisors (244820500).

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

222304340 is a wasteful number, since it uses less digits than its factorization.

222304340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6811 (or 6809 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 222304340 is about 14909.8739095943. The cubic root of 222304340 is about 605.7814640417.

Adding to 222304340 its reverse (43403222), we get a palindrome (265707562).

The spelling of 222304340 in words is "two hundred twenty-two million, three hundred four thousand, three hundred forty".