5641940 has 12 divisors (see below), whose sum is σ = 11848116. Its totient is φ = 2256768.

The previous prime is 5641939. The next prime is 5641997. The reversal of 5641940 is 491465.

It can be written as a sum of positive squares in 2 ways, for example, as 1373584 + 4268356 = 1172^2 + 2066^2 .

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, 141029 + ... + 141068.

It is an arithmetic number, because the mean of its divisors is an integer number (987343).

Almost surely, 2^5641940 is an apocalyptic number.

It is an amenable number.

5641940 is an abundant number, since it is smaller than the sum of its proper divisors (6206176).

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

5641940 is a wasteful number, since it uses less digits than its factorization.

5641940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282106 (or 282104 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 5641940 is about 2375.2768259721. The cubic root of 5641940 is about 178.0230160029.

The spelling of 5641940 in words is "five million, six hundred forty-one thousand, nine hundred forty".