4040320 has 64 divisors (see below), whose sum is σ = 9914400. Its totient is φ = 1573888.

The previous prime is 4040317. The next prime is 4040327. The reversal of 4040320 is 230404.

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 4040320.

It is not an unprimeable number, because it can be changed into a prime (4040327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37707 + ... + 37813.

Almost surely, 2^4040320 is an apocalyptic number.

4040320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4040320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4957200).

4040320 is an abundant number, since it is smaller than the sum of its proper divisors (5874080).

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

4040320 is a wasteful number, since it uses less digits than its factorization.

4040320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185 (or 173 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 13.

The square root of 4040320 is about 2010.0547256232. The cubic root of 4040320 is about 159.2716898069.

Adding to 4040320 its reverse (230404), we get a palindrome (4270724).

The spelling of 4040320 in words is "four million, forty thousand, three hundred twenty".