381776 has 20 divisors (see below), whose sum is σ = 749952. Its totient is φ = 188256.

The previous prime is 381761. The next prime is 381791. The reversal of 381776 is 677183.

It is a happy number.

381776 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (381761) and next prime (381791).

It is a congruent number.

It is an unprimeable number.

381776 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1601 + ... + 1823.

2³⁸¹⁷⁷⁶ is an apocalyptic number.

It is an amenable number.

381776 is a deficient number, since it is larger than the sum of its proper divisors (368176).

381776 is a wasteful number, since it uses less digits than its factorization.

381776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338 (or 332 counting only the distinct ones).

The product of its digits is 7056, while the sum is 32.

The square root of 381776 is about 617.8802472972. The cubic root of 381776 is about 72.5442298484.

It can be divided in two parts, 38177 and 6, that added together give a palindrome (38183).

The spelling of 381776 in words is "three hundred eighty-one thousand, seven hundred seventy-six".