22731248 has 20 divisors (see below), whose sum is σ = 44128128. Its totient is φ = 11343360.

The previous prime is 22731229. The next prime is 22731253. The reversal of 22731248 is 84213722.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 22731248.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9713 + ... + 11823.

Almost surely, 2^22731248 is an apocalyptic number.

It is an amenable number.

22731248 is a deficient number, since it is larger than the sum of its proper divisors (21396880).

22731248 is a wasteful number, since it uses less digits than its factorization.

22731248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2792 (or 2786 counting only the distinct ones).

The product of its digits is 5376, while the sum is 29.

The square root of 22731248 is about 4767.7298581191. The cubic root of 22731248 is about 283.2746815927.

The spelling of 22731248 in words is "twenty-two million, seven hundred thirty-one thousand, two hundred forty-eight".