4515220 has 24 divisors (see below), whose sum is σ = 9640008. Its totient is φ = 1776000.

The previous prime is 4515209. The next prime is 4515227. The reversal of 4515220 is 225154.

It can be written as a sum of positive squares in 4 ways, for example, as 3844 + 4511376 = 62^2 + 2124^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4515227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 631 + ... + 3070.

It is an arithmetic number, because the mean of its divisors is an integer number (401667).

Almost surely, 2^4515220 is an apocalyptic number.

It is an amenable number.

4515220 is an abundant number, since it is smaller than the sum of its proper divisors (5124788).

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

4515220 is a wasteful number, since it uses less digits than its factorization.

4515220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3771 (or 3769 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 4515220 is about 2124.9047037456. The cubic root of 4515220 is about 165.2822838548.

It can be divided in two parts, 451 and 5220, that added together give a triangular number (5671 = T₁₀₆).

The spelling of 4515220 in words is "four million, five hundred fifteen thousand, two hundred twenty".