4020320 has 24 divisors (see below), whose sum is σ = 9498384. Its totient is φ = 1608064.

The previous prime is 4020307. The next prime is 4020323. The reversal of 4020320 is 230204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4020323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12404 + ... + 12723.

It is an arithmetic number, because the mean of its divisors is an integer number (395766).

Almost surely, 2^4020320 is an apocalyptic number.

4020320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4020320 is an abundant number, since it is smaller than the sum of its proper divisors (5478064).

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

4020320 is a wasteful number, since it uses less digits than its factorization.

4020320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25142 (or 25134 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 11.

The square root of 4020320 is about 2005.0735647352. The cubic root of 4020320 is about 159.0084512207.

Adding to 4020320 its reverse (230204), we get a palindrome (4250524).

The spelling of 4020320 in words is "four million, twenty thousand, three hundred twenty".