381078 has 16 divisors (see below), whose sum is σ = 846960. Its totient is φ = 127008.

The previous prime is 381077. The next prime is 381097. The reversal of 381078 is 870183.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3475 + ... + 3582.

It is an arithmetic number, because the mean of its divisors is an integer number (52935).

2³⁸¹⁰⁷⁸ is an apocalyptic number.

381078 is an abundant number, since it is smaller than the sum of its proper divisors (465882).

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

381078 is a wasteful number, since it uses less digits than its factorization.

381078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7068 (or 7062 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 381078 is about 617.3151545200. The cubic root of 381078 is about 72.4999920729.

The spelling of 381078 in words is "three hundred eighty-one thousand, seventy-eight".