28118534424 has 32 divisors (see below), whose sum is σ = 70331976000. Its totient is φ = 9368092832.

The previous prime is 28118534417. The next prime is 28118534443. The reversal of 28118534424 is 42443581182.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 248514 + ... + 343505.

It is an arithmetic number, because the mean of its divisors is an integer number (2197874250).

Almost surely, 2^28118534424 is an apocalyptic number.

28118534424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28118534424 is an abundant number, since it is smaller than the sum of its proper divisors (42213441576).

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

28118534424 is a wasteful number, since it uses less digits than its factorization.

28118534424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 594007 (or 594003 counting only the distinct ones).

The product of its digits is 245760, while the sum is 42.

The spelling of 28118534424 in words is "twenty-eight billion, one hundred eighteen million, five hundred thirty-four thousand, four hundred twenty-four".