320300220 has 48 divisors (see below), whose sum is σ = 905240448. Its totient is φ = 84613440.

The previous prime is 320300177. The next prime is 320300243. The reversal of 320300220 is 22003023.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 320300196 and 320300205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18526 + ... + 31365.

It is an arithmetic number, because the mean of its divisors is an integer number (18859176).

Almost surely, 2^320300220 is an apocalyptic number.

320300220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

320300220 is an abundant number, since it is smaller than the sum of its proper divisors (584940228).

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

320300220 is a wasteful number, since it uses less digits than its factorization.

320300220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50010 (or 50008 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 12.

The square root of 320300220 is about 17896.9332568460. The cubic root of 320300220 is about 684.2042155527.

Adding to 320300220 its reverse (22003023), we get a palindrome (342303243).

The spelling of 320300220 in words is "three hundred twenty million, three hundred thousand, two hundred twenty".