308422 has 4 divisors (see below), whose sum is σ = 462636. Its totient is φ = 154210.

The previous prime is 308411. The next prime is 308423. The reversal of 308422 is 224803.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 224803 = 41 ⋅5483.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 308422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (308423) by changing a digit.

308422 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 as a sum of consecutive naturals, namely, 77104 + ... + 77107.

It is an arithmetic number, because the mean of its divisors is an integer number (115659).

2³⁰⁸⁴²² is an apocalyptic number.

308422 is a deficient number, since it is larger than the sum of its proper divisors (154214).

308422 is a wasteful number, since it uses less digits than its factorization.

308422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154213.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 308422 is about 555.3575424895. The cubic root of 308422 is about 67.5639631461.

The spelling of 308422 in words is "three hundred eight thousand, four hundred twenty-two".