3403440 has 120 divisors (see below), whose sum is σ = 11896560. Its totient is φ = 870912.

The previous prime is 3403427. The next prime is 3403441. The reversal of 3403440 is 443043.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (3403441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20799 + ... + 20961.

It is an arithmetic number, because the mean of its divisors is an integer number (99138).

Almost surely, 2^3403440 is an apocalyptic number.

3403440 is a gapful number since it is divisible by the number (30) 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 3403440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5948280).

3403440 is an abundant number, since it is smaller than the sum of its proper divisors (8493120).

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

3403440 is a wasteful number, since it uses less digits than its factorization.

3403440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211 (or 202 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 3403440 is about 1844.8414566027. The cubic root of 3403440 is about 150.4201553643.

Adding to 3403440 its reverse (443043), we get a palindrome (3846483).

The spelling of 3403440 in words is "three million, four hundred three thousand, four hundred forty".