388426 has 16 divisors (see below), whose sum is σ = 622440. Its totient is φ = 181440.

The previous prime is 388403. The next prime is 388459. The reversal of 388426 is 624883.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 301401 + 87025 = 549^2 + 295^2 .

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 7 ways as a sum of consecutive naturals, for example, 2056 + ... + 2236.

2³⁸⁸⁴²⁶ is an apocalyptic number.

388426 is a deficient number, since it is larger than the sum of its proper divisors (234014).

388426 is a wasteful number, since it uses less digits than its factorization.

388426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249.

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

The square root of 388426 is about 623.2383171789. The cubic root of 388426 is about 72.9630137275.

It can be divided in two parts, 38 and 8426, that added together give a square (8464 = 92²).

The spelling of 388426 in words is "three hundred eighty-eight thousand, four hundred twenty-six".