320040522 has 24 divisors (see below), whose sum is σ = 729917760. Its totient is φ = 101065320.

The previous prime is 320040517. The next prime is 320040533. The reversal of 320040522 is 225040023.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 320040495 and 320040504.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 467554 + ... + 468237.

It is an arithmetic number, because the mean of its divisors is an integer number (30413240).

Almost surely, 2^320040522 is an apocalyptic number.

320040522 is an abundant number, since it is smaller than the sum of its proper divisors (409877238).

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

320040522 is a wasteful number, since it uses less digits than its factorization.

320040522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 935818 (or 935815 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 320040522 is about 17889.6764084765. The cubic root of 320040522 is about 684.0192489710.

Adding to 320040522 its reverse (225040023), we get a palindrome (545080545).

The spelling of 320040522 in words is "three hundred twenty million, forty thousand, five hundred twenty-two".