20968788 has 48 divisors (see below), whose sum is σ = 50944320. Its totient is φ = 6706944.

The previous prime is 20968771. The next prime is 20968793. The reversal of 20968788 is 88786902.

It is a happy number.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36568 + ... + 37136.

It is an arithmetic number, because the mean of its divisors is an integer number (1061340).

Almost surely, 2^20968788 is an apocalyptic number.

It is an amenable number.

20968788 is an abundant number, since it is smaller than the sum of its proper divisors (29975532).

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

20968788 is a wasteful number, since it uses less digits than its factorization.

20968788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696 (or 694 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 48.

The square root of 20968788 is about 4579.1689202300. The cubic root of 20968788 is about 275.7556648782.

The spelling of 20968788 in words is "twenty million, nine hundred sixty-eight thousand, seven hundred eighty-eight".