3440320 has 56 divisors (see below), whose sum is σ = 8833104. Its totient is φ = 1268736.

The previous prime is 3440309. The next prime is 3440323. The reversal of 3440320 is 230443.

3440320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 3440294 and 3440303.

It is not an unprimeable number, because it can be changed into a prime (3440323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3747 + ... + 4573.

It is an arithmetic number, because the mean of its divisors is an integer number (157734).

Almost surely, 2^3440320 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3440320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4416552).

3440320 is an abundant number, since it is smaller than the sum of its proper divisors (5392784).

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

3440320 is a wasteful number, since it uses less digits than its factorization.

3440320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 857 (or 847 counting only the distinct ones).

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

The square root of 3440320 is about 1854.8099633116. The cubic root of 3440320 is about 150.9615269731.

Adding to 3440320 its reverse (230443), we get a palindrome (3670763).

The spelling of 3440320 in words is "three million, four hundred forty thousand, three hundred twenty".