5638446 has 24 divisors (see below), whose sum is σ = 13327704. Its totient is φ = 1708560.

The previous prime is 5638433. The next prime is 5638489. The reversal of 5638446 is 6448365.

It is an Ulam number.

It is a Curzon number.

It is a plaindrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 5638446.

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, 14041 + ... + 14436.

It is an arithmetic number, because the mean of its divisors is an integer number (555321).

Almost surely, 2^5638446 is an apocalyptic number.

5638446 is an abundant number, since it is smaller than the sum of its proper divisors (7689258).

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

5638446 is a wasteful number, since it uses less digits than its factorization.

5638446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28496 (or 28493 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 5638446 is about 2374.5412188463. The cubic root of 5638446 is about 177.9862590916.

It can be divided in two parts, 5638 and 446, that added together give a square (6084 = 78²).

The spelling of 5638446 in words is "five million, six hundred thirty-eight thousand, four hundred forty-six".