387740 has 12 divisors (see below), whose sum is σ = 814296. Its totient is φ = 155088.

The previous prime is 387727. The next prime is 387743. The reversal of 387740 is 47783.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387743) 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 3 ways as a sum of consecutive naturals, for example, 9674 + ... + 9713.

It is an arithmetic number, because the mean of its divisors is an integer number (67858).

2³⁸⁷⁷⁴⁰ is an apocalyptic number.

It is an amenable number.

387740 is an abundant number, since it is smaller than the sum of its proper divisors (426556).

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

387740 is a wasteful number, since it uses less digits than its factorization.

387740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19396 (or 19394 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 387740 is about 622.6877226989. The cubic root of 387740 is about 72.9200350371.

The spelling of 387740 in words is "three hundred eighty-seven thousand, seven hundred forty".