222009730 has 16 divisors (see below), whose sum is σ = 399833784. Its totient is φ = 88755840.

The previous prime is 222009727. The next prime is 222009757. The reversal of 222009730 is 37900222.

222009730 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 212955649 + 9054081 = 14593^2 + 3009^2 .

It is a junction number, because it is equal to n+sod(n) for n = 222009695 and 222009704.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17944 + ... + 27676.

Almost surely, 2^222009730 is an apocalyptic number.

222009730 is a deficient number, since it is larger than the sum of its proper divisors (177824054).

222009730 is a wasteful number, since it uses less digits than its factorization.

222009730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12021.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 222009730 is about 14899.9909395946. The cubic root of 222009730 is about 605.5137407120.

Adding to 222009730 its reverse (37900222), we get a palindrome (259909952).

The spelling of 222009730 in words is "two hundred twenty-two million, nine thousand, seven hundred thirty".