28048285557 has 16 divisors (see below), whose sum is σ = 41559255360. Its totient is φ = 18696049200.

The previous prime is 28048285547. The next prime is 28048285597. The reversal of 28048285557 is 75558284082.

28048285557 is a `hidden beast` number, since 2 + 8 + 0 + 4 + 8 + 2 + 85 + 557 = 666.

It is not a de Polignac number, because 28048285557 - 2⁸ = 28048285301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28048285547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113707 + ... + 262727.

It is an arithmetic number, because the mean of its divisors is an integer number (2597453460).

Almost surely, 2^28048285557 is an apocalyptic number.

28048285557 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

28048285557 is a deficient number, since it is larger than the sum of its proper divisors (13510969803).

28048285557 is a wasteful number, since it uses less digits than its factorization.

28048285557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156001 (or 155995 counting only the distinct ones).

The product of its (nonzero) digits is 7168000, while the sum is 54.

The spelling of 28048285557 in words is "twenty-eight billion, forty-eight million, two hundred eighty-five thousand, five hundred fifty-seven".