308216 has 16 divisors (see below), whose sum is σ = 588600. Its totient is φ = 151264.

The previous prime is 308213. The next prime is 308219. The reversal of 308216 is 612803.

It is an interprime number because it is at equal distance from previous prime (308213) and next prime (308219).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (308213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146 + ... + 798.

2³⁰⁸²¹⁶ is an apocalyptic number.

It is an amenable number.

308216 is a deficient number, since it is larger than the sum of its proper divisors (280384).

308216 is a wasteful number, since it uses less digits than its factorization.

308216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 718 (or 714 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 308216 is about 555.1720454057. The cubic root of 308216 is about 67.5489174443.

The spelling of 308216 in words is "three hundred eight thousand, two hundred sixteen".