20330037728 has 96 divisors (see below), whose sum is σ = 53739624960. Its totient is φ = 7311490560.

The previous prime is 20330037703. The next prime is 20330037731. The reversal of 20330037728 is 82773003302.

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 15 ways as a sum of consecutive naturals, for example, 285308 + ... + 349371.

It is an arithmetic number, because the mean of its divisors is an integer number (559787760).

Almost surely, 2^20330037728 is an apocalyptic number.

20330037728 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20330037728 is an abundant number, since it is smaller than the sum of its proper divisors (33409587232).

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

20330037728 is a wasteful number, since it uses less digits than its factorization.

20330037728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634720 (or 634712 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 35.

The spelling of 20330037728 in words is "twenty billion, three hundred thirty million, thirty-seven thousand, seven hundred twenty-eight".