28771910029512 has 192 divisors, whose sum is σ = 84713225950080. Its totient is φ = 8769032211456.

The previous prime is 28771910029507. The next prime is 28771910029529. The reversal of 28771910029512 is 21592001917782.

28771910029512 is a `hidden beast` number, since 2 + 8 + 7 + 7 + 19 + 100 + 2 + 9 + 512 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1119386053 + ... + 1119411755.

It is an arithmetic number, because the mean of its divisors is an integer number (441214718490).

Almost surely, 2^{28771910029512} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28771910029512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42356612975040).

28771910029512 is an abundant number, since it is smaller than the sum of its proper divisors (55941315920568).

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

28771910029512 is a wasteful number, since it uses less digits than its factorization.

28771910029512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37012 (or 37005 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 54.

The spelling of 28771910029512 in words is "twenty-eight trillion, seven hundred seventy-one billion, nine hundred ten million, twenty-nine thousand, five hundred twelve".