387786 has 24 divisors (see below), whose sum is σ = 902880. Its totient is φ = 110712.

The previous prime is 387781. The next prime is 387791. The reversal of 387786 is 687783.

387786 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (387781) and next prime (387791).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (387781) by changing a digit.

387786 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 11 ways as a sum of consecutive naturals, for example, 366 + ... + 953.

It is an arithmetic number, because the mean of its divisors is an integer number (37620).

2³⁸⁷⁷⁸⁶ is an apocalyptic number.

387786 is an abundant number, since it is smaller than the sum of its proper divisors (515094).

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

387786 is a wasteful number, since it uses less digits than its factorization.

387786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1338 (or 1331 counting only the distinct ones).

The product of its digits is 56448, while the sum is 39.

The square root of 387786 is about 622.7246582560. The cubic root of 387786 is about 72.9229185751.

The spelling of 387786 in words is "three hundred eighty-seven thousand, seven hundred eighty-six".