222342320 has 40 divisors (see below), whose sum is σ = 547357824. Its totient is φ = 83704832.

The previous prime is 222342319. The next prime is 222342349. The reversal of 222342320 is 23243222.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×222342320² = 98872214525964800, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 222342292 and 222342301.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80384 + ... + 83103.

Almost surely, 2^222342320 is an apocalyptic number.

222342320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222342320 is an abundant number, since it is smaller than the sum of its proper divisors (325015504).

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

222342320 is a wasteful number, since it uses less digits than its factorization.

222342320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163517 (or 163511 counting only the distinct ones).

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

The square root of 222342320 is about 14911.1475078211. The cubic root of 222342320 is about 605.8159606990.

Adding to 222342320 its reverse (23243222), we get a palindrome (245585542).

The spelling of 222342320 in words is "two hundred twenty-two million, three hundred forty-two thousand, three hundred twenty".