3642520 has 32 divisors (see below), whose sum is σ = 9367200. Its totient is φ = 1248768.

The previous prime is 3642497. The next prime is 3642559. The reversal of 3642520 is 252463.

It is a happy number.

3642520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 3642491 and 3642500.

It is a congruent number.

It is an unprimeable number.

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, 6225 + ... + 6784.

It is an arithmetic number, because the mean of its divisors is an integer number (292725).

Almost surely, 2^3642520 is an apocalyptic number.

It is an amenable number.

3642520 is an abundant number, since it is smaller than the sum of its proper divisors (5724680).

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

3642520 is a wasteful number, since it uses less digits than its factorization.

3642520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13027 (or 13023 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 3642520 is about 1908.5387080172. The cubic root of 3642520 is about 153.8629240693.

Adding to 3642520 its reverse (252463), we get a palindrome (3894983).

The spelling of 3642520 in words is "three million, six hundred forty-two thousand, five hundred twenty".