638482 has 12 divisors (see below), whose sum is σ = 1037610. Its totient is φ = 294528.

The previous prime is 638467. The next prime is 638489. The reversal of 638482 is 284836.

It is a happy number.

638482 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 314721 + 323761 = 561^2 + 569^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (638489) by changing a digit.

638482 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 607 + ... + 1282.

2⁶³⁸⁴⁸² is an apocalyptic number.

638482 is a deficient number, since it is larger than the sum of its proper divisors (399128).

638482 is a wasteful number, since it uses less digits than its factorization.

638482 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1917 (or 1904 counting only the distinct ones).

The product of its digits is 9216, while the sum is 31.

The square root of 638482 is about 799.0506867527. The cubic root of 638482 is about 86.1091996647.

The spelling of 638482 in words is "six hundred thirty-eight thousand, four hundred eighty-two".