308420 has 24 divisors (see below), whose sum is σ = 740544. Its totient is φ = 105696.

The previous prime is 308411. The next prime is 308423. The reversal of 308420 is 24803.

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

308420 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 7 ways as a sum of consecutive naturals, for example, 962 + ... + 1241.

It is an arithmetic number, because the mean of its divisors is an integer number (30856).

2³⁰⁸⁴²⁰ is an apocalyptic number.

It is an amenable number.

308420 is an abundant number, since it is smaller than the sum of its proper divisors (432124).

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

308420 is a wasteful number, since it uses less digits than its factorization.

308420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2219 (or 2217 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 308420 is about 555.3557418448. The cubic root of 308420 is about 67.5638171035.

The spelling of 308420 in words is "three hundred eight thousand, four hundred twenty".