5621840 has 40 divisors (see below), whose sum is σ = 14939520. Its totient is φ = 1927296.

The previous prime is 5621827. The next prime is 5621857. The reversal of 5621840 is 481265.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4460 + ... + 5579.

It is an arithmetic number, because the mean of its divisors is an integer number (373488).

Almost surely, 2^5621840 is an apocalyptic number.

It is an amenable number.

5621840 is an abundant number, since it is smaller than the sum of its proper divisors (9317680).

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

5621840 is a wasteful number, since it uses less digits than its factorization.

5621840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10059 (or 10053 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 5621840 is about 2371.0419650441. The cubic root of 5621840 is about 177.8113559260.

The spelling of 5621840 in words is "five million, six hundred twenty-one thousand, eight hundred forty".