5731240 has 16 divisors (see below), whose sum is σ = 12895380. Its totient is φ = 2292480.

The previous prime is 5731207. The next prime is 5731259. The reversal of 5731240 is 421375.

It can be written as a sum of positive squares in 2 ways, for example, as 5731236 + 4 = 2394^2 + 2^2 .

It is a super-2 number, since 2×5731240² = 65694223875200, which contains 22 as substring.

It is a plaindrome in base 13.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71601 + ... + 71680.

Almost surely, 2^5731240 is an apocalyptic number.

It is an amenable number.

5731240 is an abundant number, since it is smaller than the sum of its proper divisors (7164140).

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

5731240 is a wasteful number, since it uses less digits than its factorization.

5731240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143292 (or 143288 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 5731240 is about 2394.0008354217. Note that the first 3 decimals coincide. The cubic root of 5731240 is about 178.9573465571.

The spelling of 5731240 in words is "five million, seven hundred thirty-one thousand, two hundred forty".