28500912328 has 24 divisors (see below), whose sum is σ = 62163980550. Its totient is φ = 12214676544.

The previous prime is 28500912269. The next prime is 28500912347. The reversal of 28500912328 is 82321900582.

It can be written as a sum of positive squares in only one way, i.e., 28022090404 + 478821924 = 167398^2 + 21882^2 .

It is a super-3 number, since 3×28500912328³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36352813 + ... + 36353596.

Almost surely, 2^28500912328 is an apocalyptic number.

28500912328 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28500912328 is an abundant number, since it is smaller than the sum of its proper divisors (33663068222).

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

28500912328 is a wasteful number, since it uses less digits than its factorization.

28500912328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72706429 (or 72706418 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 40.

The spelling of 28500912328 in words is "twenty-eight billion, five hundred million, nine hundred twelve thousand, three hundred twenty-eight".