216057316 has 12 divisors (see below), whose sum is σ = 378246960. Its totient is φ = 107986760.

The previous prime is 216057299. The next prime is 216057323. The reversal of 216057316 is 613750612.

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 3 ways as a sum of consecutive naturals, for example, 3075 + ... + 21013.

It is an arithmetic number, because the mean of its divisors is an integer number (31520580).

Almost surely, 2^216057316 is an apocalyptic number.

It is an amenable number.

216057316 is a deficient number, since it is larger than the sum of its proper divisors (162189644).

216057316 is a wasteful number, since it uses less digits than its factorization.

216057316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20954 (or 20952 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 216057316 is about 14698.8882572799. Note that the first 3 decimals coincide. The cubic root of 216057316 is about 600.0530656770.

The spelling of 216057316 in words is "two hundred sixteen million, fifty-seven thousand, three hundred sixteen".