20788116 has 12 divisors (see below), whose sum is σ = 48505632. Its totient is φ = 6929368.

The previous prime is 20788063. The next prime is 20788133. The reversal of 20788116 is 61188702.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 866160 + ... + 866183.

It is an arithmetic number, because the mean of its divisors is an integer number (4042136).

Almost surely, 2^20788116 is an apocalyptic number.

It is an amenable number.

20788116 is an abundant number, since it is smaller than the sum of its proper divisors (27717516).

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

20788116 is a wasteful number, since it uses less digits than its factorization.

20788116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1732350 (or 1732348 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 33.

The square root of 20788116 is about 4559.3986445583. The cubic root of 20788116 is about 274.9613874161.

The spelling of 20788116 in words is "twenty million, seven hundred eighty-eight thousand, one hundred sixteen".