388205 has 4 divisors (see below), whose sum is σ = 465852. Its totient is φ = 310560.

The previous prime is 388187. The next prime is 388211. The reversal of 388205 is 502883.

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

It can be written as a sum of positive squares in 2 ways, for example, as 72361 + 315844 = 269^2 + 562^2 .

It is not a de Polignac number, because 388205 - 2¹⁶ = 322669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38816 + ... + 38825.

It is an arithmetic number, because the mean of its divisors is an integer number (116463).

2³⁸⁸²⁰⁵ is an apocalyptic number.

It is an amenable number.

388205 is a deficient number, since it is larger than the sum of its proper divisors (77647).

388205 is an equidigital number, since it uses as much as digits as its factorization.

388205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77646.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 388205 is about 623.0609921990. The cubic root of 388205 is about 72.9491733520.

The spelling of 388205 in words is "three hundred eighty-eight thousand, two hundred five".