320541256 has 32 divisors (see below), whose sum is σ = 727280640. Its totient is φ = 129293568.

The previous prime is 320541251. The next prime is 320541281. The reversal of 320541256 is 652145023.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (320541251) 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 7 ways as a sum of consecutive naturals, for example, 167400 + ... + 169303.

It is an arithmetic number, because the mean of its divisors is an integer number (22727520).

Almost surely, 2^320541256 is an apocalyptic number.

It is an amenable number.

320541256 is an abundant number, since it is smaller than the sum of its proper divisors (406739384).

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

320541256 is a wasteful number, since it uses less digits than its factorization.

320541256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336733 (or 336729 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 320541256 is about 17903.6659933099. The cubic root of 320541256 is about 684.3758009234.

Adding to 320541256 its reverse (652145023), we get a palindrome (972686279).

The spelling of 320541256 in words is "three hundred twenty million, five hundred forty-one thousand, two hundred fifty-six".