308228 has 12 divisors (see below), whose sum is σ = 543312. Its totient is φ = 153000.

The previous prime is 308219. The next prime is 308249. The reversal of 308228 is 822803.

It is an unprimeable number.

308228 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 851 + ... + 1157.

It is an arithmetic number, because the mean of its divisors is an integer number (45276).

2³⁰⁸²²⁸ is an apocalyptic number.

It is an amenable number.

308228 is a deficient number, since it is larger than the sum of its proper divisors (235084).

308228 is a wasteful number, since it uses less digits than its factorization.

308228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562 (or 560 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 308228 is about 555.1828527611. The cubic root of 308228 is about 67.5497940768.

The spelling of 308228 in words is "three hundred eight thousand, two hundred twenty-eight".