320520416 has 12 divisors (see below), whose sum is σ = 631024632. Its totient is φ = 160260192.

The previous prime is 320520407. The next prime is 320520437. The reversal of 320520416 is 614025023.

It is a junction number, because it is equal to n+sod(n) for n = 320520391 and 320520400.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 5008100 + ... + 5008163.

It is an arithmetic number, because the mean of its divisors is an integer number (52585386).

Almost surely, 2^320520416 is an apocalyptic number.

It is an amenable number.

320520416 is a deficient number, since it is larger than the sum of its proper divisors (310504216).

320520416 is a wasteful number, since it uses less digits than its factorization.

320520416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10016273 (or 10016265 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 320520416 is about 17903.0839801415. The cubic root of 320520416 is about 684.3609690305.

Adding to 320520416 its reverse (614025023), we get a palindrome (934545439).

The spelling of 320520416 in words is "three hundred twenty million, five hundred twenty thousand, four hundred sixteen".