4023240 has 64 divisors (see below), whose sum is σ = 13003200. Its totient is φ = 989952.

The previous prime is 4023223. The next prime is 4023241. The reversal of 4023240 is 423204.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (4023241) 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, 271 + ... + 2849.

It is an arithmetic number, because the mean of its divisors is an integer number (203175).

Almost surely, 2^4023240 is an apocalyptic number.

4023240 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 4023240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6501600).

4023240 is an abundant number, since it is smaller than the sum of its proper divisors (8979960).

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

4023240 is a wasteful number, since it uses less digits than its factorization.

4023240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2606 (or 2602 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 4023240 is about 2005.8015854017. The cubic root of 4023240 is about 159.0469383986.

Adding to 4023240 its reverse (423204), we get a palindrome (4446444).

The spelling of 4023240 in words is "four million, twenty-three thousand, two hundred forty".