20510752928 has 48 divisors (see below), whose sum is σ = 42547680000. Its totient is φ = 9706056192.

The previous prime is 20510752837. The next prime is 20510752939. The reversal of 20510752928 is 82925701502.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 621713 + ... + 653871.

It is an arithmetic number, because the mean of its divisors is an integer number (886410000).

Almost surely, 2^20510752928 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20510752928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21273840000).

20510752928 is an abundant number, since it is smaller than the sum of its proper divisors (22036927072).

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

20510752928 is a wasteful number, since it uses less digits than its factorization.

20510752928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33237 (or 33229 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 41.

The spelling of 20510752928 in words is "twenty billion, five hundred ten million, seven hundred fifty-two thousand, nine hundred twenty-eight".