381448 has 8 divisors (see below), whose sum is σ = 715230. Its totient is φ = 190720.

The previous prime is 381443. The next prime is 381461. The reversal of 381448 is 844183.

It can be written as a sum of positive squares in only one way, i.e., 362404 + 19044 = 602^2 + 138^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (381443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23833 + ... + 23848.

2³⁸¹⁴⁴⁸ is an apocalyptic number.

It is an amenable number.

381448 is a deficient number, since it is larger than the sum of its proper divisors (333782).

381448 is a wasteful number, since it uses less digits than its factorization.

381448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47687 (or 47683 counting only the distinct ones).

The product of its digits is 3072, while the sum is 28.

The square root of 381448 is about 617.6147666628. The cubic root of 381448 is about 72.5234486181.

The spelling of 381448 in words is "three hundred eighty-one thousand, four hundred forty-eight".