20320078236 has 24 divisors (see below), whose sum is σ = 47731731600. Its totient is φ = 6727900032.

The previous prime is 20320078169. The next prime is 20320078241. The reversal of 20320078236 is 63287002302.

It is a junction number, because it is equal to n+sod(n) for n = 20320078197 and 20320078206.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5680561 + ... + 5684136.

It is an arithmetic number, because the mean of its divisors is an integer number (1988822150).

Almost surely, 2^20320078236 is an apocalyptic number.

It is an amenable number.

20320078236 is an abundant number, since it is smaller than the sum of its proper divisors (27411653364).

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

20320078236 is a wasteful number, since it uses less digits than its factorization.

20320078236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11364853 (or 11364851 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 33.

The spelling of 20320078236 in words is "twenty billion, three hundred twenty million, seventy-eight thousand, two hundred thirty-six".