20788336 has 20 divisors (see below), whose sum is σ = 40486000. Its totient is φ = 10340352.

The previous prime is 20788333. The next prime is 20788351. The reversal of 20788336 is 63388702.

It is a junction number, because it is equal to n+sod(n) for n = 20788295 and 20788304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20788333) 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, 81 + ... + 6448.

It is an arithmetic number, because the mean of its divisors is an integer number (2024300).

Almost surely, 2^20788336 is an apocalyptic number.

It is an amenable number.

20788336 is a deficient number, since it is larger than the sum of its proper divisors (19697664).

20788336 is a wasteful number, since it uses less digits than its factorization.

20788336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6736 (or 6730 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 20788336 is about 4559.4227704831. The cubic root of 20788336 is about 274.9623573821.

The spelling of 20788336 in words is "twenty million, seven hundred eighty-eight thousand, three hundred thirty-six".