28027502997 has 96 divisors (see below), whose sum is σ = 43067179008. Its totient is φ = 16184233728.

The previous prime is 28027502959. The next prime is 28027503011. The reversal of 28027502997 is 79920572082.

It is not a de Polignac number, because 28027502997 - 2⁷ = 28027502869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28027502947) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 73178668 + ... + 73179050.

It is an arithmetic number, because the mean of its divisors is an integer number (448616448).

Almost surely, 2^28027502997 is an apocalyptic number.

It is an amenable number.

28027502997 is a deficient number, since it is larger than the sum of its proper divisors (15039676011).

28027502997 is a wasteful number, since it uses less digits than its factorization.

28027502997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579 (or 566 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 51.

The spelling of 28027502997 in words is "twenty-eight billion, twenty-seven million, five hundred two thousand, nine hundred ninety-seven".