388756 has 12 divisors (see below), whose sum is σ = 720468. Its totient is φ = 182912.

The previous prime is 388727. The next prime is 388757. The reversal of 388756 is 657883.

388756 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 266256 + 122500 = 516^2 + 350^2 .

It is a super-2 number, since 2×388756² = 302262455072, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388757) by changing a digit.

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, 2791 + ... + 2926.

It is an arithmetic number, because the mean of its divisors is an integer number (60039).

2³⁸⁸⁷⁵⁶ is an apocalyptic number.

It is an amenable number.

388756 is a deficient number, since it is larger than the sum of its proper divisors (331712).

388756 is a wasteful number, since it uses less digits than its factorization.

388756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5738 (or 5736 counting only the distinct ones).

The product of its digits is 40320, while the sum is 37.

The square root of 388756 is about 623.5030072101. The cubic root of 388756 is about 72.9836705829.

The spelling of 388756 in words is "three hundred eighty-eight thousand, seven hundred fifty-six".