4523940 has 72 divisors (see below), whose sum is σ = 14080248. Its totient is φ = 1175040.

The previous prime is 4523917. The next prime is 4523941. The reversal of 4523940 is 493254.

It can be written as a sum of positive squares in 4 ways, for example, as 459684 + 4064256 = 678^2 + 2016^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4523941) 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, 7074 + ... + 7686.

It is an arithmetic number, because the mean of its divisors is an integer number (195559).

Almost surely, 2^4523940 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 4523940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7040124).

4523940 is an abundant number, since it is smaller than the sum of its proper divisors (9556308).

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

4523940 is a wasteful number, since it uses less digits than its factorization.

4523940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669 (or 664 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 4523940 is about 2126.9555707631. The cubic root of 4523940 is about 165.3886156761.

The spelling of 4523940 in words is "four million, five hundred twenty-three thousand, nine hundred forty".