381478 has 8 divisors (see below), whose sum is σ = 597168. Its totient is φ = 182424.

The previous prime is 381467. The next prime is 381481. The reversal of 381478 is 874183.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4101 + ... + 4192.

It is an arithmetic number, because the mean of its divisors is an integer number (74646).

2³⁸¹⁴⁷⁸ is an apocalyptic number.

381478 is a deficient number, since it is larger than the sum of its proper divisors (215690).

381478 is a wasteful number, since it uses less digits than its factorization.

381478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8318.

The product of its digits is 5376, while the sum is 31.

The square root of 381478 is about 617.6390531694. The cubic root of 381478 is about 72.5253498353.

The spelling of 381478 in words is "three hundred eighty-one thousand, four hundred seventy-eight".