97128856 has 16 divisors (see below), whose sum is σ = 198672840. Its totient is φ = 44149440.

The previous prime is 97128847. The next prime is 97128887. The reversal of 97128856 is 65882179.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 551781 + ... + 551956.

Almost surely, 2^97128856 is an apocalyptic number.

It is an amenable number.

97128856 is an abundant number, since it is smaller than the sum of its proper divisors (101543984).

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

97128856 is a wasteful number, since it uses less digits than its factorization.

97128856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1103754 (or 1103750 counting only the distinct ones).

The product of its digits is 241920, while the sum is 46.

The square root of 97128856 is about 9855.3973030010. The cubic root of 97128856 is about 459.6734544465.

The spelling of 97128856 in words is "ninety-seven million, one hundred twenty-eight thousand, eight hundred fifty-six".