28528363680 has 96 divisors (see below), whose sum is σ = 95150510784. Its totient is φ = 7160057856.

The previous prime is 28528363679. The next prime is 28528363693. The reversal of 28528363680 is 8636382582.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (51).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1739902 + ... + 1756221.

It is an arithmetic number, because the mean of its divisors is an integer number (991151154).

Almost surely, 2^28528363680 is an apocalyptic number.

28528363680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28528363680 is an abundant number, since it is smaller than the sum of its proper divisors (66622147104).

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

28528363680 is a wasteful number, since it uses less digits than its factorization.

28528363680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3496158 (or 3496150 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 51.

The spelling of 28528363680 in words is "twenty-eight billion, five hundred twenty-eight million, three hundred sixty-three thousand, six hundred eighty".