28457775484 has 12 divisors (see below), whose sum is σ = 49806648808. Its totient is φ = 14227304400.

The previous prime is 28457775457. The next prime is 28457775491. The reversal of 28457775484 is 48457775482.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 354927 + ... + 427654.

Almost surely, 2^28457775484 is an apocalyptic number.

It is an amenable number.

28457775484 is a deficient number, since it is larger than the sum of its proper divisors (21348873324).

28457775484 is a wasteful number, since it uses less digits than its factorization.

28457775484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 791676 (or 791674 counting only the distinct ones).

The product of its digits is 70246400, while the sum is 61.

The spelling of 28457775484 in words is "twenty-eight billion, four hundred fifty-seven million, seven hundred seventy-five thousand, four hundred eighty-four".