5638830 has 32 divisors (see below), whose sum is σ = 13674528. Its totient is φ = 1488000.

The previous prime is 5638823. The next prime is 5638859. The reversal of 5638830 is 388365.

It is a junction number, because it is equal to n+sod(n) for n = 5638791 and 5638800.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2100 + ... + 3960.

It is an arithmetic number, because the mean of its divisors is an integer number (427329).

Almost surely, 2^5638830 is an apocalyptic number.

5638830 is an abundant number, since it is smaller than the sum of its proper divisors (8035698).

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

5638830 is a wasteful number, since it uses less digits than its factorization.

5638830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1972.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 5638830 is about 2374.6220751943. The cubic root of 5638830 is about 177.9902995177.

The spelling of 5638830 in words is "five million, six hundred thirty-eight thousand, eight hundred thirty".