28717975776 has 48 divisors (see below), whose sum is σ = 86153929344. Its totient is φ = 8205135744.

The previous prime is 28717975763. The next prime is 28717975787. The reversal of 28717975776 is 67757971782.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

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, 21366870 + ... + 21368213.

It is an arithmetic number, because the mean of its divisors is an integer number (1794873528).

Almost surely, 2^28717975776 is an apocalyptic number.

It is an amenable number.

28717975776 is an abundant number, since it is smaller than the sum of its proper divisors (57435953568).

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

28717975776 is a wasteful number, since it uses less digits than its factorization.

28717975776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42735103 (or 42735095 counting only the distinct ones).

The product of its digits is 72606240, while the sum is 66.

The spelling of 28717975776 in words is "twenty-eight billion, seven hundred seventeen million, nine hundred seventy-five thousand, seven hundred seventy-six".