4458220 has 36 divisors (see below), whose sum is σ = 10145520. Its totient is φ = 1644864.

The previous prime is 4458193. The next prime is 4458253. The reversal of 4458220 is 228544.

It is a happy number.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2721 + ... + 4039.

It is an arithmetic number, because the mean of its divisors is an integer number (281820).

Almost surely, 2^4458220 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 4458220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5072760).

4458220 is an abundant number, since it is smaller than the sum of its proper divisors (5687300).

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

4458220 is a wasteful number, since it uses less digits than its factorization.

4458220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1354 (or 1339 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 4458220 is about 2111.4497389235. The cubic root of 4458220 is about 164.5838302964.

The spelling of 4458220 in words is "four million, four hundred fifty-eight thousand, two hundred twenty".