388538 has 4 divisors (see below), whose sum is σ = 582810. Its totient is φ = 194268.

The previous prime is 388529. The next prime is 388541. The reversal of 388538 is 835883.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 375769 + 12769 = 613^2 + 113^2 .

It is a junction number, because it is equal to n+sod(n) for n = 388498 and 388507.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97133 + ... + 97136.

2³⁸⁸⁵³⁸ is an apocalyptic number.

388538 is a deficient number, since it is larger than the sum of its proper divisors (194272).

388538 is a wasteful number, since it uses less digits than its factorization.

388538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194271.

The product of its digits is 23040, while the sum is 35.

The square root of 388538 is about 623.3281639714. The cubic root of 388538 is about 72.9700258502.

The spelling of 388538 in words is "three hundred eighty-eight thousand, five hundred thirty-eight".