320240420 has 24 divisors (see below), whose sum is σ = 672915264. Its totient is φ = 128018016.

The previous prime is 320240419. The next prime is 320240467. The reversal of 320240420 is 24042023.

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, 37817 + ... + 45503.

It is an arithmetic number, because the mean of its divisors is an integer number (28038136).

Almost surely, 2^320240420 is an apocalyptic number.

It is an amenable number.

320240420 is an abundant number, since it is smaller than the sum of its proper divisors (352674844).

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

320240420 is a wasteful number, since it uses less digits than its factorization.

320240420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9779 (or 9777 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 320240420 is about 17895.2625015673. The cubic root of 320240420 is about 684.1616326299.

Adding to 320240420 its reverse (24042023), we get a palindrome (344282443).

The spelling of 320240420 in words is "three hundred twenty million, two hundred forty thousand, four hundred twenty".