381948 has 24 divisors (see below), whose sum is σ = 1018752. Its totient is φ = 109104.

The previous prime is 381943. The next prime is 381949. The reversal of 381948 is 849183.

381948 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 not an unprimeable number, because it can be changed into a prime (381943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2190 + ... + 2357.

It is an arithmetic number, because the mean of its divisors is an integer number (42448).

2³⁸¹⁹⁴⁸ is an apocalyptic number.

It is an amenable number.

381948 is an abundant number, since it is smaller than the sum of its proper divisors (636804).

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

381948 is a wasteful number, since it uses less digits than its factorization.

381948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4561 (or 4559 counting only the distinct ones).

The product of its digits is 6912, while the sum is 33.

The square root of 381948 is about 618.0194171707. The cubic root of 381948 is about 72.5551225658. Note that the first 3 decimals are identical.

The spelling of 381948 in words is "three hundred eighty-one thousand, nine hundred forty-eight".