28243493544 has 32 divisors (see below), whose sum is σ = 80695696320. Its totient is φ = 8069569536.

The previous prime is 28243493527. The next prime is 28243493567. The reversal of 28243493544 is 44539434282.

It is a junction number, because it is equal to n+sod(n) for n = 28243493493 and 28243493502.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84057849 + ... + 84058184.

It is an arithmetic number, because the mean of its divisors is an integer number (2521740510).

Almost surely, 2^28243493544 is an apocalyptic number.

28243493544 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28243493544 is an abundant number, since it is smaller than the sum of its proper divisors (52452202776).

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

28243493544 is a wasteful number, since it uses less digits than its factorization.

28243493544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168116049 (or 168116045 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 48.

The spelling of 28243493544 in words is "twenty-eight billion, two hundred forty-three million, four hundred ninety-three thousand, five hundred forty-four".