320400524 has 6 divisors (see below), whose sum is σ = 560700924. Its totient is φ = 160200260.

The previous prime is 320400517. The next prime is 320400533. The reversal of 320400524 is 425004023.

It is a junction number, because it is equal to n+sod(n) for n = 320400496 and 320400505.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40050062 + ... + 40050069.

It is an arithmetic number, because the mean of its divisors is an integer number (93450154).

Almost surely, 2^320400524 is an apocalyptic number.

It is an amenable number.

320400524 is a deficient number, since it is larger than the sum of its proper divisors (240300400).

320400524 is a wasteful number, since it uses less digits than its factorization.

320400524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80100135 (or 80100133 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 320400524 is about 17899.7353053055. The cubic root of 320400524 is about 684.2756290296.

Adding to 320400524 its reverse (425004023), we get a palindrome (745404547).

The spelling of 320400524 in words is "three hundred twenty million, four hundred thousand, five hundred twenty-four".