28548801556 has 48 divisors (see below), whose sum is σ = 57735804672. Its totient is φ = 12207564800.

The previous prime is 28548801521. The next prime is 28548801563. The reversal of 28548801556 is 65510884582.

It is a super-2 number, since 2×28548801556² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1800021 + ... + 1815811.

It is an arithmetic number, because the mean of its divisors is an integer number (1202829264).

Almost surely, 2^28548801556 is an apocalyptic number.

It is an amenable number.

28548801556 is an abundant number, since it is smaller than the sum of its proper divisors (29187003116).

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

28548801556 is a wasteful number, since it uses less digits than its factorization.

28548801556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18240 (or 18238 counting only the distinct ones).

The product of its (nonzero) digits is 3072000, while the sum is 52.

The spelling of 28548801556 in words is "twenty-eight billion, five hundred forty-eight million, eight hundred one thousand, five hundred fifty-six".