97857216 has 42 divisors (see below), whose sum is σ = 280491692. Its totient is φ = 32618880.

The previous prime is 97857187. The next prime is 97857269. The reversal of 97857216 is 61275879.

97857216 is a `hidden beast` number, since 9 + 78 + 572 + 1 + 6 = 666.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 84370 + ... + 85521.

Almost surely, 2^97857216 is an apocalyptic number.

97857216 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

It is an amenable number.

97857216 is an abundant number, since it is smaller than the sum of its proper divisors (182634476).

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

97857216 is a wasteful number, since it uses less digits than its factorization.

97857216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169909 (or 169896 counting only the distinct ones).

The product of its digits is 211680, while the sum is 45.

The square root of 97857216 is about 9892.2806268322. The cubic root of 97857216 is about 460.8196099872.

The spelling of 97857216 in words is "ninety-seven million, eight hundred fifty-seven thousand, two hundred sixteen".