28321120788 has 48 divisors (see below), whose sum is σ = 69951161280. Its totient is φ = 8902865664.

The previous prime is 28321120787. The next prime is 28321120799. The reversal of 28321120788 is 88702112382.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28321120781) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 931345 + ... + 961272.

It is an arithmetic number, because the mean of its divisors is an integer number (1457315860).

Almost surely, 2^28321120788 is an apocalyptic number.

It is an amenable number.

28321120788 is an abundant number, since it is smaller than the sum of its proper divisors (41630040492).

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

28321120788 is a wasteful number, since it uses less digits than its factorization.

28321120788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1892696 (or 1892694 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 42.

The spelling of 28321120788 in words is "twenty-eight billion, three hundred twenty-one million, one hundred twenty thousand, seven hundred eighty-eight".