28575775460 has 24 divisors (see below), whose sum is σ = 62618222016. Its totient is φ = 10933340000.

The previous prime is 28575775427. The next prime is 28575775471. The reversal of 28575775460 is 6457757582.

It is a junction number, because it is equal to n+sod(n) for n = 28575775396 and 28575775405.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31060166 + ... + 31061085.

It is an arithmetic number, because the mean of its divisors is an integer number (2609092584).

Almost surely, 2^28575775460 is an apocalyptic number.

28575775460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28575775460 is an abundant number, since it is smaller than the sum of its proper divisors (34042446556).

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

28575775460 is a wasteful number, since it uses less digits than its factorization.

28575775460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62121283 (or 62121281 counting only the distinct ones).

The product of its (nonzero) digits is 16464000, while the sum is 56.

The spelling of 28575775460 in words is "twenty-eight billion, five hundred seventy-five million, seven hundred seventy-five thousand, four hundred sixty".