28076562528 has 144 divisors (see below), whose sum is σ = 87825460464. Its totient is φ = 7826165760.

The previous prime is 28076562497. The next prime is 28076562533. The reversal of 28076562528 is 82526567082.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 120076 + ... + 265652.

It is an arithmetic number, because the mean of its divisors is an integer number (609899031).

Almost surely, 2^28076562528 is an apocalyptic number.

28076562528 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 28076562528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43912730232).

28076562528 is an abundant number, since it is smaller than the sum of its proper divisors (59748897936).

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

28076562528 is a wasteful number, since it uses less digits than its factorization.

28076562528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145645 (or 145630 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 51.

The spelling of 28076562528 in words is "twenty-eight billion, seventy-six million, five hundred sixty-two thousand, five hundred twenty-eight".