28587871836272 has 80 divisors (see below), whose sum is σ = 66822150370560. Its totient is φ = 11574224234496.

The previous prime is 28587871836247. The next prime is 28587871836313. The reversal of 28587871836272 is 27263817878582.

It is a super-2 number, since 2×28587871836272² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28587871836272.

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, 18277358 + ... + 19779725.

It is an arithmetic number, because the mean of its divisors is an integer number (835276879632).

Almost surely, 2^{28587871836272} is an apocalyptic number.

It is an amenable number.

28587871836272 is an abundant number, since it is smaller than the sum of its proper divisors (38234278534288).

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

28587871836272 is a wasteful number, since it uses less digits than its factorization.

28587871836272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38057470 (or 38057464 counting only the distinct ones).

The product of its digits is 1011548160, while the sum is 74.

The spelling of 28587871836272 in words is "twenty-eight trillion, five hundred eighty-seven billion, eight hundred seventy-one million, eight hundred thirty-six thousand, two hundred seventy-two".