3520424 has 16 divisors (see below), whose sum is σ = 6762420. Its totient is φ = 1717120.

The previous prime is 3520399. The next prime is 3520427. The reversal of 3520424 is 4240253.

It can be written as a sum of positive squares in 2 ways, for example, as 2617924 + 902500 = 1618^2 + 950^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3520396 and 3520405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3520427) 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 3 ways as a sum of consecutive naturals, for example, 5039 + ... + 5694.

Almost surely, 2^3520424 is an apocalyptic number.

It is an amenable number.

3520424 is a deficient number, since it is larger than the sum of its proper divisors (3241996).

3520424 is a wasteful number, since it uses less digits than its factorization.

3520424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10780 (or 10776 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 3520424 is about 1876.2792969065. The cubic root of 3520424 is about 152.1242059574.

Adding to 3520424 its reverse (4240253), we get a palindrome (7760677).

The spelling of 3520424 in words is "three million, five hundred twenty thousand, four hundred twenty-four".