3504040 has 32 divisors (see below), whose sum is σ = 8349480. Its totient is φ = 1318912.

The previous prime is 3504031. The next prime is 3504043. The reversal of 3504040 is 404053.

3504040 = T₄ + T₅ + ... + T₂₇₅.

It can be written as a sum of positive squares in 4 ways, for example, as 3290596 + 213444 = 1814^2 + 462^2 .

It is not an unprimeable number, because it can be changed into a prime (3504043) 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 7 ways as a sum of consecutive naturals, for example, 1897 + ... + 3256.

Almost surely, 2^3504040 is an apocalyptic number.

It is an amenable number.

3504040 is an abundant number, since it is smaller than the sum of its proper divisors (4845440).

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

3504040 is a wasteful number, since it uses less digits than its factorization.

3504040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5181 (or 5177 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 3504040 is about 1871.9081174032. The cubic root of 3504040 is about 151.8878443189.

Adding to 3504040 its reverse (404053), we get a palindrome (3908093).

The spelling of 3504040 in words is "three million, five hundred four thousand, forty".