320223040 has 28 divisors (see below), whose sum is σ = 762531876. Its totient is φ = 128089088.

The previous prime is 320223023. The next prime is 320223077. The reversal of 320223040 is 40322023.

320223040 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 155151936 + 165071104 = 12456^2 + 12848^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 500029 + ... + 500668.

Almost surely, 2^320223040 is an apocalyptic number.

It is an amenable number.

320223040 is an abundant number, since it is smaller than the sum of its proper divisors (442308836).

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

320223040 is a wasteful number, since it uses less digits than its factorization.

320223040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000714 (or 1000704 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 320223040 is about 17894.7768915961. The cubic root of 320223040 is about 684.1492555286.

Adding to 320223040 its reverse (40322023), we get a palindrome (360545063).

The spelling of 320223040 in words is "three hundred twenty million, two hundred twenty-three thousand, forty".