388278 has 48 divisors (see below), whose sum is σ = 960336. Its totient is φ = 112320.

The previous prime is 388277. The next prime is 388301. The reversal of 388278 is 872883.

388278 is a `hidden beast` number, since 388 + 278 = 666.

388278 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388273) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7300 + ... + 7352.

It is an arithmetic number, because the mean of its divisors is an integer number (20007).

2³⁸⁸²⁷⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 388278, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (480168).

388278 is an abundant number, since it is smaller than the sum of its proper divisors (572058).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

388278 is a wasteful number, since it uses less digits than its factorization.

388278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109 (or 106 counting only the distinct ones).

The product of its digits is 21504, while the sum is 36.

The square root of 388278 is about 623.1195711900. The cubic root of 388278 is about 72.9537456406.

It can be divided in two parts, 388 and 278, that added together give a palindrome (666).

The spelling of 388278 in words is "three hundred eighty-eight thousand, two hundred seventy-eight".