27515000028 has 24 divisors (see below), whose sum is σ = 64207532032. Its totient is φ = 9170828784.

The previous prime is 27514999991. The next prime is 27515000063. The reversal of 27515000028 is 82000051572.

It is a junction number, because it is equal to n+sod(n) for n = 27514999959 and 27515000004.

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, 40101 + ... + 237987.

Almost surely, 2^27515000028 is an apocalyptic number.

It is an amenable number.

27515000028 is an abundant number, since it is smaller than the sum of its proper divisors (36692532004).

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

27515000028 is a wasteful number, since it uses less digits than its factorization.

27515000028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209481 (or 209479 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 30.

The spelling of 27515000028 in words is "twenty-seven billion, five hundred fifteen million, twenty-eight", and thus it is an aban number.