638230 has 8 divisors (see below), whose sum is σ = 1148832. Its totient is φ = 255288.

The previous prime is 638201. The next prime is 638233. The reversal of 638230 is 32836.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (638233) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 31902 + ... + 31921.

It is an arithmetic number, because the mean of its divisors is an integer number (143604).

2⁶³⁸²³⁰ is an apocalyptic number.

638230 is a deficient number, since it is larger than the sum of its proper divisors (510602).

638230 is a wasteful number, since it uses less digits than its factorization.

638230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63830.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 638230 is about 798.8929840723. The cubic root of 638230 is about 86.0978694712.

It can be divided in two parts, 638 and 230, that added together give a palindrome (868).

The spelling of 638230 in words is "six hundred thirty-eight thousand, two hundred thirty".