4520404 has 48 divisors (see below), whose sum is σ = 9878400. Its totient is φ = 1766016.

The previous prime is 4520393. The next prime is 4520407. The reversal of 4520404 is 4040254.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4520407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15282 + ... + 15574.

It is an arithmetic number, because the mean of its divisors is an integer number (205800).

Almost surely, 2^4520404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4520404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4939200).

4520404 is an abundant number, since it is smaller than the sum of its proper divisors (5357996).

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

4520404 is a wasteful number, since it uses less digits than its factorization.

4520404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352 (or 350 counting only the distinct ones).

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

The square root of 4520404 is about 2126.1241732317. The cubic root of 4520404 is about 165.3455141188.

Adding to 4520404 its reverse (4040254), we get a palindrome (8560658).

It can be divided in two parts, 45 and 20404, that added together give a square (20449 = 143²).

The spelling of 4520404 in words is "four million, five hundred twenty thousand, four hundred four".