20328923736 has 96 divisors (see below), whose sum is σ = 60786573120. Its totient is φ = 6086040000.

The previous prime is 20328923647. The next prime is 20328923743. The reversal of 20328923736 is 63732982302.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 20328923691 and 20328923700.

It is a congruent number.

It is an unprimeable number.

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 in 23 ways as a sum of consecutive naturals, for example, 88890 + ... + 220361.

It is an arithmetic number, because the mean of its divisors is an integer number (633193470).

Almost surely, 2^20328923736 is an apocalyptic number.

It is an amenable number.

20328923736 is an abundant number, since it is smaller than the sum of its proper divisors (40457649384).

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

20328923736 is a wasteful number, since it uses less digits than its factorization.

20328923736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309357 (or 309350 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 45.

The spelling of 20328923736 in words is "twenty billion, three hundred twenty-eight million, nine hundred twenty-three thousand, seven hundred thirty-six".