28728571460 has 48 divisors (see below), whose sum is σ = 61597609920. Its totient is φ = 11251536000.

The previous prime is 28728571331. The next prime is 28728571471. The reversal of 28728571460 is 6417582782.

It is a junction number, because it is equal to n+sod(n) for n = 28728571399 and 28728571408.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 247682 + ... + 344678.

It is an arithmetic number, because the mean of its divisors is an integer number (1283283540).

Almost surely, 2^28728571460 is an apocalyptic number.

28728571460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28728571460 is an abundant number, since it is smaller than the sum of its proper divisors (32869038460).

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

28728571460 is a wasteful number, since it uses less digits than its factorization.

28728571460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97316 (or 97314 counting only the distinct ones).

The product of its (nonzero) digits is 1505280, while the sum is 50.

The spelling of 28728571460 in words is "twenty-eight billion, seven hundred twenty-eight million, five hundred seventy-one thousand, four hundred sixty".