97678928 has 20 divisors (see below), whose sum is σ = 190249728. Its totient is φ = 48582240.

The previous prime is 97678921. The next prime is 97678939. The reversal of 97678928 is 82987679.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97678921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12926 + ... + 19037.

Almost surely, 2^97678928 is an apocalyptic number.

It is an amenable number.

97678928 is a deficient number, since it is larger than the sum of its proper divisors (92570800).

97678928 is a wasteful number, since it uses less digits than its factorization.

97678928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32162 (or 32156 counting only the distinct ones).

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

The square root of 97678928 is about 9883.2650475438. The cubic root of 97678928 is about 460.5395810634.

The spelling of 97678928 in words is "ninety-seven million, six hundred seventy-eight thousand, nine hundred twenty-eight".