222302320 has 20 divisors (see below), whose sum is σ = 516853080. Its totient is φ = 88920896.

The previous prime is 222302317. The next prime is 222302321. The reversal of 222302320 is 23203222.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 222302294 and 222302303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222302321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1389310 + ... + 1389469.

It is an arithmetic number, because the mean of its divisors is an integer number (25842654).

Almost surely, 2^222302320 is an apocalyptic number.

222302320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222302320 is an abundant number, since it is smaller than the sum of its proper divisors (294550760).

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

222302320 is a wasteful number, since it uses less digits than its factorization.

222302320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2778792 (or 2778786 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 222302320 is about 14909.8061690956. The cubic root of 222302320 is about 605.7796291963.

Adding to 222302320 its reverse (23203222), we get a palindrome (245505542).

The spelling of 222302320 in words is "two hundred twenty-two million, three hundred two thousand, three hundred twenty".