22638763 has 8 divisors (see below), whose sum is σ = 26765280. Its totient is φ = 18735360.

The previous prime is 22638761. The next prime is 22638767. The reversal of 22638763 is 36783622.

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

It is not a de Polignac number, because 22638763 - 2¹ = 22638761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22638761) 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 7 ways as a sum of consecutive naturals, for example, 55558 + ... + 55963.

It is an arithmetic number, because the mean of its divisors is an integer number (3345660).

Almost surely, 2^22638763 is an apocalyptic number.

22638763 is a deficient number, since it is larger than the sum of its proper divisors (4126517).

22638763 is a wasteful number, since it uses less digits than its factorization.

22638763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111557.

The product of its digits is 72576, while the sum is 37.

The square root of 22638763 is about 4758.0209121020. The cubic root of 22638763 is about 282.8899795836.

It can be divided in two parts, 2263 and 8763, that added together give a triangular number (11026 = T₁₄₈).

The spelling of 22638763 in words is "twenty-two million, six hundred thirty-eight thousand, seven hundred sixty-three".