5638388 has 24 divisors (see below), whose sum is σ = 11424000. Its totient is φ = 2384928.

The previous prime is 5638379. The next prime is 5638397. The reversal of 5638388 is 8838365.

It is an interprime number because it is at equal distance from previous prime (5638379) and next prime (5638397).

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, 938 + ... + 3486.

It is an arithmetic number, because the mean of its divisors is an integer number (476000).

Almost surely, 2^5638388 is an apocalyptic number.

It is an amenable number.

5638388 is an abundant number, since it is smaller than the sum of its proper divisors (5785612).

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

5638388 is a wasteful number, since it uses less digits than its factorization.

5638388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2639 (or 2637 counting only the distinct ones).

The product of its digits is 138240, while the sum is 41.

The square root of 5638388 is about 2374.5290059294. The cubic root of 5638388 is about 177.9856488030.

The spelling of 5638388 in words is "five million, six hundred thirty-eight thousand, three hundred eighty-eight".