5642840 has 48 divisors (see below), whose sum is σ = 14774400. Its totient is φ = 1934016.

The previous prime is 5642839. The next prime is 5642851. The reversal of 5642840 is 482465.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 521 + ... + 3399.

It is an arithmetic number, because the mean of its divisors is an integer number (307800).

Almost surely, 2^5642840 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5642840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7387200).

5642840 is an abundant number, since it is smaller than the sum of its proper divisors (9131560).

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

5642840 is a wasteful number, since it uses less digits than its factorization.

5642840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2904 (or 2893 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 5642840 is about 2375.4662700194. The cubic root of 5642840 is about 178.0324815529.

The spelling of 5642840 in words is "five million, six hundred forty-two thousand, eight hundred forty".