22638495 has 24 divisors (see below), whose sum is σ = 39817008. Its totient is φ = 10975360.

The previous prime is 22638491. The next prime is 22638523. The reversal of 22638495 is 59483622.

It is a happy number.

It is not a de Polignac number, because 22638495 - 2² = 22638491 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22638491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4422 + ... + 8051.

It is an arithmetic number, because the mean of its divisors is an integer number (1659042).

Almost surely, 2^22638495 is an apocalyptic number.

22638495 is a deficient number, since it is larger than the sum of its proper divisors (17178513).

22638495 is a wasteful number, since it uses less digits than its factorization.

22638495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12503 (or 12492 counting only the distinct ones).

The product of its digits is 103680, while the sum is 39.

The square root of 22638495 is about 4757.9927490487. The cubic root of 22638495 is about 282.8888632857. Note that the first 4 decimals are identical.

The spelling of 22638495 in words is "twenty-two million, six hundred thirty-eight thousand, four hundred ninety-five".