28144589049480 has 128 divisors (see below), whose sum is σ = 88315078118400. Its totient is φ = 7161775940352.

The previous prime is 28144589049431. The next prime is 28144589049523. The reversal of 28144589049480 is 8494098544182.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11012194 + ... + 13325073.

It is an arithmetic number, because the mean of its divisors is an integer number (689961547800).

Almost surely, 2^{28144589049480} is an apocalyptic number.

28144589049480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28144589049480 is an abundant number, since it is smaller than the sum of its proper divisors (60170489068920).

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

28144589049480 is a wasteful number, since it uses less digits than its factorization.

28144589049480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24337723 (or 24337719 counting only the distinct ones).

The product of its (nonzero) digits is 106168320, while the sum is 66.

The spelling of 28144589049480 in words is "twenty-eight trillion, one hundred forty-four billion, five hundred eighty-nine million, forty-nine thousand, four hundred eighty".