381788 has 12 divisors (see below), whose sum is σ = 728952. Its totient is φ = 173520.

The previous prime is 381761. The next prime is 381791. The reversal of 381788 is 887183.

381788 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 4295 + ... + 4382.

It is an arithmetic number, because the mean of its divisors is an integer number (60746).

2³⁸¹⁷⁸⁸ is an apocalyptic number.

It is an amenable number.

381788 is a deficient number, since it is larger than the sum of its proper divisors (347164).

381788 is a wasteful number, since it uses less digits than its factorization.

381788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8692 (or 8690 counting only the distinct ones).

The product of its digits is 10752, while the sum is 35.

The square root of 381788 is about 617.8899578404. The cubic root of 381788 is about 72.5449899116.

The spelling of 381788 in words is "three hundred eighty-one thousand, seven hundred eighty-eight".