28601445788 has 48 divisors (see below), whose sum is σ = 53313876000. Its totient is φ = 13387772160.

The previous prime is 28601445787. The next prime is 28601445791. The reversal of 28601445788 is 88754410682.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28601445781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2224418 + ... + 2237238.

It is an arithmetic number, because the mean of its divisors is an integer number (1110705750).

Almost surely, 2^28601445788 is an apocalyptic number.

It is an amenable number.

28601445788 is a deficient number, since it is larger than the sum of its proper divisors (24712430212).

28601445788 is a wasteful number, since it uses less digits than its factorization.

28601445788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13190 (or 13188 counting only the distinct ones).

The product of its (nonzero) digits is 3440640, while the sum is 53.

The spelling of 28601445788 in words is "twenty-eight billion, six hundred one million, four hundred forty-five thousand, seven hundred eighty-eight".