22730265 has 12 divisors (see below), whose sum is σ = 39399204. Its totient is φ = 12122784.

The previous prime is 22730261. The next prime is 22730293. The reversal of 22730265 is 56203722.

It can be written as a sum of positive squares in 2 ways, for example, as 3229209 + 19501056 = 1797^2 + 4416^2 .

It is not a de Polignac number, because 22730265 - 2² = 22730261 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (22730261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 252514 + ... + 252603.

It is an arithmetic number, because the mean of its divisors is an integer number (3283267).

Almost surely, 2^22730265 is an apocalyptic number.

It is an amenable number.

22730265 is a deficient number, since it is larger than the sum of its proper divisors (16668939).

22730265 is a wasteful number, since it uses less digits than its factorization.

22730265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505128 (or 505125 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 22730265 is about 4767.6267681101. The cubic root of 22730265 is about 283.2705981826.

Adding to 22730265 its reverse (56203722), we get a palindrome (78933987).

The spelling of 22730265 in words is "twenty-two million, seven hundred thirty thousand, two hundred sixty-five".