22722638 has 8 divisors (see below), whose sum is σ = 34435632. Its totient is φ = 11244096.

The previous prime is 22722629. The next prime is 22722641. The reversal of 22722638 is 83622722.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 58370 + ... + 58757.

It is an arithmetic number, because the mean of its divisors is an integer number (4304454).

Almost surely, 2^22722638 is an apocalyptic number.

22722638 is a deficient number, since it is larger than the sum of its proper divisors (11712994).

22722638 is a wasteful number, since it uses less digits than its factorization.

22722638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117226.

The product of its digits is 16128, while the sum is 32.

The square root of 22722638 is about 4766.8268271461. The cubic root of 22722638 is about 283.2389114052.

The spelling of 22722638 in words is "twenty-two million, seven hundred twenty-two thousand, six hundred thirty-eight".