320023020 has 24 divisors (see below), whose sum is σ = 896064624. Its totient is φ = 85339456.

The previous prime is 320023007. The next prime is 320023031. The reversal of 320023020 is 20320023.

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 = 320022987 and 320023005.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2666799 + ... + 2666918.

It is an arithmetic number, because the mean of its divisors is an integer number (37336026).

Almost surely, 2^320023020 is an apocalyptic number.

320023020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

320023020 is an abundant number, since it is smaller than the sum of its proper divisors (576041604).

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

320023020 is a wasteful number, since it uses less digits than its factorization.

320023020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5333729 (or 5333727 counting only the distinct ones).

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

The square root of 320023020 is about 17889.1872369876. The cubic root of 320023020 is about 684.0067797967.

Adding to 320023020 its reverse (20320023), we get a palindrome (340343043).

The spelling of 320023020 in words is "three hundred twenty million, twenty-three thousand, twenty".