22788620 has 24 divisors (see below), whose sum is σ = 49025088. Its totient is φ = 8892800.

The previous prime is 22788617. The next prime is 22788637. The reversal of 22788620 is 2688722.

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 7 ways as a sum of consecutive naturals, for example, 13076 + ... + 14715.

It is an arithmetic number, because the mean of its divisors is an integer number (2042712).

Almost surely, 2^22788620 is an apocalyptic number.

22788620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22788620 is an abundant number, since it is smaller than the sum of its proper divisors (26236468).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22788620 is a wasteful number, since it uses less digits than its factorization.

22788620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27841 (or 27839 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 22788620 is about 4773.7427664255. The cubic root of 22788620 is about 283.5128028666.

The spelling of 22788620 in words is "twenty-two million, seven hundred eighty-eight thousand, six hundred twenty".