388634 has 8 divisors (see below), whose sum is σ = 596640. Its totient is φ = 189756.

The previous prime is 388621. The next prime is 388651. The reversal of 388634 is 436883.

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

It is a d-powerful number, because it can be written as 3¹¹ + 8³ + 6² + 8⁵ + 3¹¹ + 4⁵ .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 388634.

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 3 ways as a sum of consecutive naturals, for example, 2174 + ... + 2345.

It is an arithmetic number, because the mean of its divisors is an integer number (74580).

2³⁸⁸⁶³⁴ is an apocalyptic number.

388634 is a deficient number, since it is larger than the sum of its proper divisors (208006).

388634 is a wasteful number, since it uses less digits than its factorization.

388634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4564.

The product of its digits is 13824, while the sum is 32.

The square root of 388634 is about 623.4051652016. The cubic root of 388634 is about 72.9760351685.

The spelling of 388634 in words is "three hundred eighty-eight thousand, six hundred thirty-four".