22209730 has 8 divisors (see below), whose sum is σ = 39977532. Its totient is φ = 8883888.

The previous prime is 22209713. The next prime is 22209749. The reversal of 22209730 is 3790222.

It can be written as a sum of positive squares in 2 ways, for example, as 21187609 + 1022121 = 4603^2 + 1011^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 22209695 and 22209704.

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 3 ways as a sum of consecutive naturals, for example, 1110477 + ... + 1110496.

Almost surely, 2^22209730 is an apocalyptic number.

22209730 is a deficient number, since it is larger than the sum of its proper divisors (17767802).

22209730 is a wasteful number, since it uses less digits than its factorization.

22209730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2220980.

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

The square root of 22209730 is about 4712.7200213889. The cubic root of 22209730 is about 281.0915301511.

Adding to 22209730 its reverse (3790222), we get a palindrome (25999952).

The spelling of 22209730 in words is "twenty-two million, two hundred nine thousand, seven hundred thirty".