320427 has 6 divisors (see below), whose sum is σ = 462852. Its totient is φ = 213612.

The previous prime is 320417. The next prime is 320431. The reversal of 320427 is 724023.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-320427 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 320427.

It is not an unprimeable number, because it can be changed into a prime (320417) 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 5 ways as a sum of consecutive naturals, for example, 17793 + ... + 17810.

It is an arithmetic number, because the mean of its divisors is an integer number (77142).

2³²⁰⁴²⁷ is an apocalyptic number.

320427 is a deficient number, since it is larger than the sum of its proper divisors (142425).

320427 is a wasteful number, since it uses less digits than its factorization.

320427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35609 (or 35606 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 18.

The square root of 320427 is about 566.0627173733. The cubic root of 320427 is about 68.4294476671.

It can be divided in two parts, 320 and 427, that added together give a palindrome (747).

The spelling of 320427 in words is "three hundred twenty thousand, four hundred twenty-seven", and thus it is an iban number.