320500050 has 144 divisors (see below), whose sum is σ = 882264960. Its totient is φ = 76926720.

The previous prime is 320500021. The next prime is 320500051. The reversal of 320500050 is 50005023.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (320500051) by changing a digit.

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 in 71 ways as a sum of consecutive naturals, for example, 1191316 + ... + 1191584.

It is an arithmetic number, because the mean of its divisors is an integer number (6126840).

Almost surely, 2^320500050 is an apocalyptic number.

320500050 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 320500050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (441132480).

320500050 is an abundant number, since it is smaller than the sum of its proper divisors (561764910).

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

320500050 is a wasteful number, since it uses less digits than its factorization.

320500050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357 (or 339 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 15.

The square root of 320500050 is about 17902.5151864200. The cubic root of 320500050 is about 684.3464738636.

Adding to 320500050 its reverse (50005023), we get a palindrome (370505073).

The spelling of 320500050 in words is "three hundred twenty million, five hundred thousand, fifty".