387878 has 4 divisors (see below), whose sum is σ = 581820. Its totient is φ = 193938.

The previous prime is 387857. The next prime is 387911. The reversal of 387878 is 878783.

387878 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two 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.

387878 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96968 + ... + 96971.

It is an arithmetic number, because the mean of its divisors is an integer number (145455).

2³⁸⁷⁸⁷⁸ is an apocalyptic number.

387878 is a deficient number, since it is larger than the sum of its proper divisors (193942).

387878 is a wasteful number, since it uses less digits than its factorization.

387878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193941.

The product of its digits is 75264, while the sum is 41.

The square root of 387878 is about 622.7985227985. The cubic root of 387878 is about 72.9286849669.

The spelling of 387878 in words is "three hundred eighty-seven thousand, eight hundred seventy-eight".