5638724 has 36 divisors (see below), whose sum is σ = 12367404. Its totient is φ = 2229696.

The previous prime is 5638709. The next prime is 5638751. The reversal of 5638724 is 4278365.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3678724 + 1960000 = 1918^2 + 1400^2 .

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, 1442 + ... + 3654.

It is an arithmetic number, because the mean of its divisors is an integer number (343539).

Almost surely, 2^5638724 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 5638724, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6183702).

5638724 is an abundant number, since it is smaller than the sum of its proper divisors (6728680).

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

5638724 is a wasteful number, since it uses less digits than its factorization.

5638724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2244 (or 2235 counting only the distinct ones).

The product of its digits is 40320, while the sum is 35.

The square root of 5638724 is about 2374.5997557483. The cubic root of 5638724 is about 177.9891842100.

The spelling of 5638724 in words is "five million, six hundred thirty-eight thousand, seven hundred twenty-four".