387730 has 32 divisors (see below), whose sum is σ = 829440. Its totient is φ = 127680.

The previous prime is 387727. The next prime is 387743. The reversal of 387730 is 37783.

387730 = 49² + 50² + ... + 108².

387730 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1935 + ... + 2125.

It is an arithmetic number, because the mean of its divisors is an integer number (25920).

2³⁸⁷⁷³⁰ is an apocalyptic number.

387730 is an abundant number, since it is smaller than the sum of its proper divisors (441710).

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

387730 is a wasteful number, since it uses less digits than its factorization.

387730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234.

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 387730 is about 622.6796929401. The cubic root of 387730 is about 72.9194081509.

The spelling of 387730 in words is "three hundred eighty-seven thousand, seven hundred thirty".