378885 has 32 divisors (see below), whose sum is σ = 685440. Its totient is φ = 177408.

The previous prime is 378883. The next prime is 378893. The reversal of 378885 is 588873.

378885 is a nontrivial binomial coefficient, being equal to C(871, 2).

It is not a de Polignac number, because 378885 - 2¹ = 378883 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378883) 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 in 31 ways as a sum of consecutive naturals, for example, 5622 + ... + 5688.

It is an arithmetic number, because the mean of its divisors is an integer number (21420).

2³⁷⁸⁸⁸⁵ is an apocalyptic number.

378885 is the 870-th triangular number.

It is an amenable number.

378885 is a deficient number, since it is larger than the sum of its proper divisors (306555).

378885 is a wasteful number, since it uses less digits than its factorization.

378885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117.

The product of its digits is 53760, while the sum is 39.

The square root of 378885 is about 615.5363514854. The cubic root of 378885 is about 72.3606518787.

The spelling of 378885 in words is "three hundred seventy-eight thousand, eight hundred eighty-five".