20789328 has 60 divisors (see below), whose sum is σ = 62481120. Its totient is φ = 5939136.

The previous prime is 20789323. The next prime is 20789333. The reversal of 20789328 is 82398702.

It is an interprime number because it is at equal distance from previous prime (20789323) and next prime (20789333).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20789323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2068 + ... + 6771.

It is an arithmetic number, because the mean of its divisors is an integer number (1041352).

Almost surely, 2^20789328 is an apocalyptic number.

20789328 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20789328 is an abundant number, since it is smaller than the sum of its proper divisors (41691792).

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

20789328 is a wasteful number, since it uses less digits than its factorization.

20789328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8864 (or 8851 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 20789328 is about 4559.5315548859. The cubic root of 20789328 is about 274.9667309616.

The spelling of 20789328 in words is "twenty million, seven hundred eighty-nine thousand, three hundred twenty-eight".