22788772 has 24 divisors (see below), whose sum is σ = 42547680. Its totient is φ = 10642560.

The previous prime is 22788767. The next prime is 22788797. The reversal of 22788772 is 27788722.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8247 + ... + 10657.

It is an arithmetic number, because the mean of its divisors is an integer number (1772820).

Almost surely, 2^22788772 is an apocalyptic number.

It is an amenable number.

22788772 is a deficient number, since it is larger than the sum of its proper divisors (19758908).

22788772 is a wasteful number, since it uses less digits than its factorization.

22788772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2571 (or 2569 counting only the distinct ones).

The product of its digits is 175616, while the sum is 43.

The square root of 22788772 is about 4773.7586868211. The cubic root of 22788772 is about 283.5134332083.

The spelling of 22788772 in words is "twenty-two million, seven hundred eighty-eight thousand, seven hundred seventy-two".