22645263 has 8 divisors (see below), whose sum is σ = 30644608. Its totient is φ = 14871384.

The previous prime is 22645247. The next prime is 22645267. The reversal of 22645263 is 36254622.

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

It is not a de Polignac number, because 22645263 - 2⁴ = 22645247 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22645263.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22645267) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56131 + ... + 56532.

It is an arithmetic number, because the mean of its divisors is an integer number (3830576).

Almost surely, 2^22645263 is an apocalyptic number.

22645263 is a deficient number, since it is larger than the sum of its proper divisors (7999345).

22645263 is a wasteful number, since it uses less digits than its factorization.

22645263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112733.

The product of its digits is 17280, while the sum is 30.

The square root of 22645263 is about 4758.7039201867. The cubic root of 22645263 is about 282.9170512764.

Adding to 22645263 its reverse (36254622), we get a palindrome (58899885).

The spelling of 22645263 in words is "twenty-two million, six hundred forty-five thousand, two hundred sixty-three".