28650050520 has 512 divisors, whose sum is σ = 109734912000. Its totient is φ = 5823037440.

The previous prime is 28650050509. The next prime is 28650050573. The reversal of 28650050520 is 2505005682.

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 127 ways as a sum of consecutive naturals, for example, 39846721 + ... + 39847439.

It is an arithmetic number, because the mean of its divisors is an integer number (214326000).

Almost surely, 2^28650050520 is an apocalyptic number.

28650050520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28650050520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54867456000).

28650050520 is an abundant number, since it is smaller than the sum of its proper divisors (81084861480).

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

28650050520 is a wasteful number, since it uses less digits than its factorization.

28650050520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 883 (or 879 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 33.

The spelling of 28650050520 in words is "twenty-eight billion, six hundred fifty million, fifty thousand, five hundred twenty".