4540224 has 112 divisors (see below), whose sum is σ = 13825728. Its totient is φ = 1302528.

The previous prime is 4540219. The next prime is 4540231. The reversal of 4540224 is 4220454.

It is a super-2 number, since 2×4540224² = 41227267940352, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 4540224.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42379 + ... + 42485.

It is an arithmetic number, because the mean of its divisors is an integer number (123444).

Almost surely, 2^4540224 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 4540224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6912864).

4540224 is an abundant number, since it is smaller than the sum of its proper divisors (9285504).

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

4540224 is a wasteful number, since it uses less digits than its factorization.

4540224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152 (or 142 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 21.

The square root of 4540224 is about 2130.7801388224. The cubic root of 4540224 is about 165.5868177796.

Adding to 4540224 its reverse (4220454), we get a palindrome (8760678).

The spelling of 4540224 in words is "four million, five hundred forty thousand, two hundred twenty-four".