4520440 has 16 divisors (see below), whose sum is σ = 10171080. Its totient is φ = 1808160.

The previous prime is 4520431. The next prime is 4520449. The reversal of 4520440 is 440254.

It is an interprime number because it is at equal distance from previous prime (4520431) and next prime (4520449).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4520449) 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, 56466 + ... + 56545.

Almost surely, 2^4520440 is an apocalyptic number.

4520440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4520440 is an abundant number, since it is smaller than the sum of its proper divisors (5650640).

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

4520440 is a wasteful number, since it uses less digits than its factorization.

4520440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113022 (or 113018 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 4520440 is about 2126.1326393243. The cubic root of 4520440 is about 165.3459530488.

Adding to 4520440 its reverse (440254), we get a palindrome (4960694).

The spelling of 4520440 in words is "four million, five hundred twenty thousand, four hundred forty".