97890855928 has 32 divisors (see below), whose sum is σ = 193221766800. Its totient is φ = 46365481728.

The previous prime is 97890855913. The next prime is 97890855967. The reversal of 97890855928 is 82955809879.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2720100 + ... + 2755852.

Almost surely, 2^97890855928 is an apocalyptic number.

It is an amenable number.

97890855928 is a deficient number, since it is larger than the sum of its proper divisors (95330910872).

97890855928 is a wasteful number, since it uses less digits than its factorization.

97890855928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53791 (or 53787 counting only the distinct ones).

The product of its (nonzero) digits is 130636800, while the sum is 70.

The spelling of 97890855928 in words is "ninety-seven billion, eight hundred ninety million, eight hundred fifty-five thousand, nine hundred twenty-eight".