97687928 has 32 divisors (see below), whose sum is σ = 198024960. Its totient is φ = 44910720.

The previous prime is 97687903. The next prime is 97687937. The reversal of 97687928 is 82978679.

It is a zygodrome in base 15.

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, 27113 + ... + 30503.

It is an arithmetic number, because the mean of its divisors is an integer number (6188280).

Almost surely, 2^97687928 is an apocalyptic number.

It is an amenable number.

97687928 is an abundant number, since it is smaller than the sum of its proper divisors (100337032).

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

97687928 is a wasteful number, since it uses less digits than its factorization.

97687928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3687 (or 3683 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 56.

The square root of 97687928 is about 9883.7203521751. The cubic root of 97687928 is about 460.5537251203.

The spelling of 97687928 in words is "ninety-seven million, six hundred eighty-seven thousand, nine hundred twenty-eight".