28243552556 has 12 divisors (see below), whose sum is σ = 49757937600. Its totient is φ = 14026998960.

The previous prime is 28243552541. The next prime is 28243552619. The reversal of 28243552556 is 65525534282.

It is a self number, because there is not a number n which added to its sum of digits gives 28243552556.

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, 23693660 + ... + 23694851.

It is an arithmetic number, because the mean of its divisors is an integer number (4146494800).

Almost surely, 2^28243552556 is an apocalyptic number.

It is an amenable number.

28243552556 is a deficient number, since it is larger than the sum of its proper divisors (21514385044).

28243552556 is a wasteful number, since it uses less digits than its factorization.

28243552556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47388664 (or 47388662 counting only the distinct ones).

The product of its digits is 2880000, while the sum is 47.

The spelling of 28243552556 in words is "twenty-eight billion, two hundred forty-three million, five hundred fifty-two thousand, five hundred fifty-six".