214917816 has 64 divisors (see below), whose sum is σ = 567302400. Its totient is φ = 67661568.

The previous prime is 214917779. The next prime is 214917817. The reversal of 214917816 is 618719412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214917817) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 228900 + ... + 229836.

It is an arithmetic number, because the mean of its divisors is an integer number (8864100).

Almost surely, 2^214917816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 214917816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (283651200).

214917816 is an abundant number, since it is smaller than the sum of its proper divisors (352384584).

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

214917816 is a wasteful number, since it uses less digits than its factorization.

214917816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1468 (or 1464 counting only the distinct ones).

The product of its digits is 24192, while the sum is 39.

The square root of 214917816 is about 14660.0755796142. The cubic root of 214917816 is about 598.9962996902.

The spelling of 214917816 in words is "two hundred fourteen million, nine hundred seventeen thousand, eight hundred sixteen".