305422 has 16 divisors (see below), whose sum is σ = 523152. Its totient is φ = 132480.

The previous prime is 305419. The next prime is 305423. The reversal of 305422 is 224503.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 305396 and 305405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97 + ... + 787.

It is an arithmetic number, because the mean of its divisors is an integer number (32697).

2³⁰⁵⁴²² is an apocalyptic number.

305422 is a deficient number, since it is larger than the sum of its proper divisors (217730).

305422 is a wasteful number, since it uses less digits than its factorization.

305422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723.

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 305422 is about 552.6499796435. The cubic root of 305422 is about 67.3441856398.

Adding to 305422 its reverse (224503), we get a palindrome (529925).

It can be divided in two parts, 305 and 422, that added together give a palindrome (727).

The spelling of 305422 in words is "three hundred five thousand, four hundred twenty-two".