28728585874460 has 48 divisors (see below), whose sum is σ = 60350861468352. Its totient is φ = 11487467174400.

The previous prime is 28728585874459. The next prime is 28728585874489. The reversal of 28728585874460 is 6447858582782.

It is a congruent number.

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, 1436922224 + ... + 1436942216.

It is an arithmetic number, because the mean of its divisors is an integer number (1257309613924).

Almost surely, 2^{28728585874460} is an apocalyptic number.

28728585874460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28728585874460 is an abundant number, since it is smaller than the sum of its proper divisors (31622275593892).

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

28728585874460 is a wasteful number, since it uses less digits than its factorization.

28728585874460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41214 (or 41212 counting only the distinct ones).

The product of its (nonzero) digits is 1926758400, while the sum is 74.

The spelling of 28728585874460 in words is "twenty-eight trillion, seven hundred twenty-eight billion, five hundred eighty-five million, eight hundred seventy-four thousand, four hundred sixty".