387278 has 8 divisors (see below), whose sum is σ = 588168. Its totient is φ = 191224.

The previous prime is 387269. The next prime is 387281. The reversal of 387278 is 872783.

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.

387278 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 in 3 ways as a sum of consecutive naturals, for example, 1001 + ... + 1332.

It is an arithmetic number, because the mean of its divisors is an integer number (73521).

2³⁸⁷²⁷⁸ is an apocalyptic number.

387278 is a deficient number, since it is larger than the sum of its proper divisors (200890).

387278 is a wasteful number, since it uses less digits than its factorization.

387278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2418.

The product of its digits is 18816, while the sum is 35.

The square root of 387278 is about 622.3166396618. The cubic root of 387278 is about 72.8910616310.

The spelling of 387278 in words is "three hundred eighty-seven thousand, two hundred seventy-eight".