22748559 has 4 divisors (see below), whose sum is σ = 30331416. Its totient is φ = 15165704.

The previous prime is 22748519. The next prime is 22748597. The reversal of 22748559 is 95584722.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22748559 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22748559.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22748519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3791424 + ... + 3791429.

It is an arithmetic number, because the mean of its divisors is an integer number (7582854).

Almost surely, 2^22748559 is an apocalyptic number.

22748559 is a deficient number, since it is larger than the sum of its proper divisors (7582857).

22748559 is an equidigital number, since it uses as much as digits as its factorization.

22748559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7582856.

The product of its digits is 201600, while the sum is 42.

The square root of 22748559 is about 4769.5449468477. The cubic root of 22748559 is about 283.3465726993.

The spelling of 22748559 in words is "twenty-two million, seven hundred forty-eight thousand, five hundred fifty-nine".