381878 has 8 divisors (see below), whose sum is σ = 654672. Its totient is φ = 163656.

The previous prime is 381859. The next prime is 381911. The reversal of 381878 is 878183.

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 Curzon number.

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, 13625 + ... + 13652.

It is an arithmetic number, because the mean of its divisors is an integer number (81834).

2³⁸¹⁸⁷⁸ is an apocalyptic number.

381878 is a deficient number, since it is larger than the sum of its proper divisors (272794).

381878 is a wasteful number, since it uses less digits than its factorization.

381878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27286.

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

The square root of 381878 is about 617.9627820508. The cubic root of 381878 is about 72.5506898779.

The spelling of 381878 in words is "three hundred eighty-one thousand, eight hundred seventy-eight".