4522720 has 48 divisors (see below), whose sum is σ = 11158560. Its totient is φ = 1729024.

The previous prime is 4522709. The next prime is 4522729. The reversal of 4522720 is 272254.

It is a junction number, because it is equal to n+sod(n) for n = 4522691 and 4522700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4522729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3066 + ... + 4294.

It is an arithmetic number, because the mean of its divisors is an integer number (232470).

Almost surely, 2^4522720 is an apocalyptic number.

4522720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4522720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5579280).

4522720 is an abundant number, since it is smaller than the sum of its proper divisors (6635840).

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

4522720 is a wasteful number, since it uses less digits than its factorization.

4522720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1267 (or 1259 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 22.

The square root of 4522720 is about 2126.6687565298. The cubic root of 4522720 is about 165.3737472022.

Adding to 4522720 its reverse (272254), we get a palindrome (4794974).

The spelling of 4522720 in words is "four million, five hundred twenty-two thousand, seven hundred twenty".