388306 has 8 divisors (see below), whose sum is σ = 601344. Its totient is φ = 187860.

The previous prime is 388301. The next prime is 388313. The reversal of 388306 is 603883.

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

It is not an unprimeable number, because it can be changed into a prime (388301) by changing a digit.

388306 is an untouchable number, because it is not equal to the sum of proper divisors of any 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, 3070 + ... + 3193.

It is an arithmetic number, because the mean of its divisors is an integer number (75168).

2³⁸⁸³⁰⁶ is an apocalyptic number.

388306 is a deficient number, since it is larger than the sum of its proper divisors (213038).

388306 is a wasteful number, since it uses less digits than its factorization.

388306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6296.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 388306 is about 623.1420383829. The cubic root of 388306 is about 72.9554992430.

The spelling of 388306 in words is "three hundred eighty-eight thousand, three hundred six".