97215916 has 12 divisors (see below), whose sum is σ = 194431888. Its totient is φ = 41663952.

The previous prime is 97215889. The next prime is 97215941. The reversal of 97215916 is 61951279.

97215916 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1735971 + ... + 1736026.

Almost surely, 2^97215916 is an apocalyptic number.

It is an amenable number.

97215916 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

97215916 is a wasteful number, since it uses less digits than its factorization.

97215916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3472008 (or 3472006 counting only the distinct ones).

The product of its digits is 34020, while the sum is 40.

The square root of 97215916 is about 9859.8131828144. The cubic root of 97215916 is about 459.8107539120.

The spelling of 97215916 in words is "ninety-seven million, two hundred fifteen thousand, nine hundred sixteen".