4423720 has 96 divisors (see below), whose sum is σ = 12086280. Its totient is φ = 1451520.

The previous prime is 4423717. The next prime is 4423721. The reversal of 4423720 is 273244.

4423720 = T₂₂₅ + T₂₂₆ + ... + T₃₃₅.

4423720 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 3261636 + 1162084 = 1806^2 + 1078^2 .

It is a nialpdrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 4423691 and 4423700.

It is not an unprimeable number, because it can be changed into a prime (4423721) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 72490 + ... + 72550.

Almost surely, 2^4423720 is an apocalyptic number.

4423720 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 4423720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6043140).

4423720 is an abundant number, since it is smaller than the sum of its proper divisors (7662560).

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

4423720 is a wasteful number, since it uses less digits than its factorization.

4423720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123 (or 112 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 22.

The square root of 4423720 is about 2103.2641298705. The cubic root of 4423720 is about 164.1581856642.

Adding to 4423720 its reverse (273244), we get a palindrome (4696964).

The spelling of 4423720 in words is "four million, four hundred twenty-three thousand, seven hundred twenty".