28891714577488 has 40 divisors (see below), whose sum is σ = 65280113124800. Its totient is φ = 12382163388000.

The previous prime is 28891714577483. The next prime is 28891714577549. The reversal of 28891714577488 is 88477541719882.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28891714577483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2632257138 + ... + 2632268113.

It is an arithmetic number, because the mean of its divisors is an integer number (1632002828120).

Almost surely, 2^{28891714577488} is an apocalyptic number.

28891714577488 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28891714577488 is an abundant number, since it is smaller than the sum of its proper divisors (36388398547312).

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

28891714577488 is an equidigital number, since it uses as much as digits as its factorization.

28891714577488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5264525280 (or 5264525260 counting only the distinct ones).

The product of its digits is 2023096320, while the sum is 79.

The spelling of 28891714577488 in words is "twenty-eight trillion, eight hundred ninety-one billion, seven hundred fourteen million, five hundred seventy-seven thousand, four hundred eighty-eight".