28512957480 has 128 divisors (see below), whose sum is σ = 97793740800. Its totient is φ = 6514912512.

The previous prime is 28512957479. The next prime is 28512957493. The reversal of 28512957480 is 8475921582.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3640849 + ... + 3648671.

It is an arithmetic number, because the mean of its divisors is an integer number (764013600).

Almost surely, 2^28512957480 is an apocalyptic number.

28512957480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28512957480 is an abundant number, since it is smaller than the sum of its proper divisors (69280783320).

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

28512957480 is a wasteful number, since it uses less digits than its factorization.

28512957480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12183 (or 12179 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 51.

The spelling of 28512957480 in words is "twenty-eight billion, five hundred twelve million, nine hundred fifty-seven thousand, four hundred eighty".