5638398 has 16 divisors (see below), whose sum is σ = 11301120. Its totient is φ = 1875416.

The previous prime is 5638397. The next prime is 5638411. The reversal of 5638398 is 8938365.

5638398 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5638397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3661 + ... + 4967.

It is an arithmetic number, because the mean of its divisors is an integer number (706320).

Almost surely, 2^5638398 is an apocalyptic number.

5638398 is an abundant number, since it is smaller than the sum of its proper divisors (5662722).

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

5638398 is a wasteful number, since it uses less digits than its factorization.

5638398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2031.

The product of its digits is 155520, while the sum is 42.

The square root of 5638398 is about 2374.5311116092. The cubic root of 5638398 is about 177.9857540255.

The spelling of 5638398 in words is "five million, six hundred thirty-eight thousand, three hundred ninety-eight".