28575729456 has 20 divisors (see below), whose sum is σ = 73820634552. Its totient is φ = 9525243136.

The previous prime is 28575729439. The next prime is 28575729467. The reversal of 28575729456 is 65492757582.

It is a self number, because there is not a number n which added to its sum of digits gives 28575729456.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 297663801 + ... + 297663896.

Almost surely, 2^28575729456 is an apocalyptic number.

It is an amenable number.

28575729456 is an abundant number, since it is smaller than the sum of its proper divisors (45244905096).

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

28575729456 is a wasteful number, since it uses less digits than its factorization.

28575729456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595327708 (or 595327702 counting only the distinct ones).

The product of its digits is 42336000, while the sum is 60.

The spelling of 28575729456 in words is "twenty-eight billion, five hundred seventy-five million, seven hundred twenty-nine thousand, four hundred fifty-six".