5781940 has 24 divisors (see below), whose sum is σ = 12402432. Its totient is φ = 2263200.

The previous prime is 5781911. The next prime is 5781961. The reversal of 5781940 is 491875.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 5781896 and 5781905.

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 7 ways as a sum of consecutive naturals, for example, 2136 + ... + 4015.

It is an arithmetic number, because the mean of its divisors is an integer number (516768).

Almost surely, 2^5781940 is an apocalyptic number.

It is an amenable number.

5781940 is an abundant number, since it is smaller than the sum of its proper divisors (6620492).

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

5781940 is a wasteful number, since it uses less digits than its factorization.

5781940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6207 (or 6205 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 5781940 is about 2404.5664889955. The cubic root of 5781940 is about 179.4834987663.

The spelling of 5781940 in words is "five million, seven hundred eighty-one thousand, nine hundred forty".