5721440 has 24 divisors (see below), whose sum is σ = 13517280. Its totient is φ = 2288512.

The previous prime is 5721437. The next prime is 5721461. The reversal of 5721440 is 441275.

5721440 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17720 + ... + 18039.

It is an arithmetic number, because the mean of its divisors is an integer number (563220).

Almost surely, 2^5721440 is an apocalyptic number.

It is an amenable number.

5721440 is an abundant number, since it is smaller than the sum of its proper divisors (7795840).

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

5721440 is a wasteful number, since it uses less digits than its factorization.

5721440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35774 (or 35766 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 5721440 is about 2391.9531767992. The cubic root of 5721440 is about 178.8552870516.

The spelling of 5721440 in words is "five million, seven hundred twenty-one thousand, four hundred forty".