216442316 has 24 divisors (see below), whose sum is σ = 382034016. Its totient is φ = 107294720.

The previous prime is 216442309. The next prime is 216442333. The reversal of 216442316 is 613244612.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 319370 + ... + 320046.

It is an arithmetic number, because the mean of its divisors is an integer number (15918084).

Almost surely, 2^216442316 is an apocalyptic number.

It is an amenable number.

216442316 is a deficient number, since it is larger than the sum of its proper divisors (165591700).

216442316 is a wasteful number, since it uses less digits than its factorization.

216442316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1249 (or 1247 counting only the distinct ones).

The product of its digits is 6912, while the sum is 29.

The square root of 216442316 is about 14711.9786568633. The cubic root of 216442316 is about 600.4092726149.

Adding to 216442316 its reverse (613244612), we get a palindrome (829686928).

The spelling of 216442316 in words is "two hundred sixteen million, four hundred forty-two thousand, three hundred sixteen".