387724 has 6 divisors (see below), whose sum is σ = 678524. Its totient is φ = 193860.

The previous prime is 387721. The next prime is 387727. The reversal of 387724 is 427783.

387724 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 (387721) and next prime (387727).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (387721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48462 + ... + 48469.

2³⁸⁷⁷²⁴ is an apocalyptic number.

It is an amenable number.

387724 is a deficient number, since it is larger than the sum of its proper divisors (290800).

387724 is a wasteful number, since it uses less digits than its factorization.

387724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96935 (or 96933 counting only the distinct ones).

The product of its digits is 9408, while the sum is 31.

The square root of 387724 is about 622.6748750351. The cubic root of 387724 is about 72.9190320140.

It can be divided in two parts, 387 and 724, that added together give a palindrome (1111).

The spelling of 387724 in words is "three hundred eighty-seven thousand, seven hundred twenty-four".