28923031349928 has 96 divisors (see below), whose sum is σ = 80861839868160. Its totient is φ = 9329807934720.

The previous prime is 28923031349911. The next prime is 28923031349957. The reversal of 28923031349928 is 82994313032982.

28923031349928 is a `hidden beast` number, since 2 + 8 + 9 + 230 + 31 + 349 + 9 + 28 = 666.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 129829051 + ... + 130051637.

It is an arithmetic number, because the mean of its divisors is an integer number (842310831960).

Almost surely, 2^{28923031349928} is an apocalyptic number.

It is an amenable number.

28923031349928 is an abundant number, since it is smaller than the sum of its proper divisors (51938808518232).

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

28923031349928 is a wasteful number, since it uses less digits than its factorization.

28923031349928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280847 (or 280840 counting only the distinct ones).

The product of its (nonzero) digits is 40310784, while the sum is 63.

The spelling of 28923031349928 in words is "twenty-eight trillion, nine hundred twenty-three billion, thirty-one million, three hundred forty-nine thousand, nine hundred twenty-eight".