387040 has 48 divisors (see below), whose sum is σ = 952560. Its totient is φ = 148480.

The previous prime is 387031. The next prime is 387047. The reversal of 387040 is 40783.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 387040.

It is not an unprimeable number, because it can be changed into a prime (387047) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 6531 + ... + 6589.

It is an arithmetic number, because the mean of its divisors is an integer number (19845).

2³⁸⁷⁰⁴⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 387040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (476280).

387040 is an abundant number, since it is smaller than the sum of its proper divisors (565520).

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

387040 is a wasteful number, since it uses less digits than its factorization.

387040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115 (or 107 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 387040 is about 622.1253892906. The cubic root of 387040 is about 72.8761269436.

The spelling of 387040 in words is "three hundred eighty-seven thousand, forty".