5243940 has 144 divisors (see below), whose sum is σ = 17978688. Its totient is φ = 1275264.

The previous prime is 5243923. The next prime is 5243947. The reversal of 5243940 is 493425.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5243947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 63139 + ... + 63221.

It is an arithmetic number, because the mean of its divisors is an integer number (124852).

Almost surely, 2^5243940 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 5243940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8989344).

5243940 is an abundant number, since it is smaller than the sum of its proper divisors (12734748).

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

5243940 is a wasteful number, since it uses less digits than its factorization.

5243940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120 (or 106 counting only the distinct ones).

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

The square root of 5243940 is about 2289.9650652357. The cubic root of 5243940 is about 173.7344343663.

The spelling of 5243940 in words is "five million, two hundred forty-three thousand, nine hundred forty".