20384728996 has 6 divisors (see below), whose sum is σ = 35673275750. Its totient is φ = 10192364496.

The previous prime is 20384728943. The next prime is 20384728997. The reversal of 20384728996 is 69982748302.

It can be written as a sum of positive squares in only one way, i.e., 17177772096 + 3206956900 = 131064^2 + 56630^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20384728996.

It is not an unprimeable number, because it can be changed into a prime (20384728997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2548091121 + ... + 2548091128.

Almost surely, 2^20384728996 is an apocalyptic number.

It is an amenable number.

20384728996 is a deficient number, since it is larger than the sum of its proper divisors (15288546754).

20384728996 is a wasteful number, since it uses less digits than its factorization.

20384728996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5096182253 (or 5096182251 counting only the distinct ones).

The product of its (nonzero) digits is 10450944, while the sum is 58.

The spelling of 20384728996 in words is "twenty billion, three hundred eighty-four million, seven hundred twenty-eight thousand, nine hundred ninety-six".