28727622085288 has 128 divisors (see below), whose sum is σ = 68657191142400. Its totient is φ = 10970325310464.

The previous prime is 28727622085273. The next prime is 28727622085291. The reversal of 28727622085288 is 88258022672782.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26289031 + ... + 27359977.

It is an arithmetic number, because the mean of its divisors is an integer number (536384305800).

Almost surely, 2^{28727622085288} is an apocalyptic number.

28727622085288 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28727622085288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34328595571200).

28727622085288 is an abundant number, since it is smaller than the sum of its proper divisors (39929569057112).

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

28727622085288 is a wasteful number, since it uses less digits than its factorization.

28727622085288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1072479 (or 1072475 counting only the distinct ones).

The product of its (nonzero) digits is 192675840, while the sum is 67.

The spelling of 28727622085288 in words is "twenty-eight trillion, seven hundred twenty-seven billion, six hundred twenty-two million, eighty-five thousand, two hundred eighty-eight".