387556 has 24 divisors (see below), whose sum is σ = 758520. Its totient is φ = 172032.

The previous prime is 387551. The next prime is 387577. The reversal of 387556 is 655783.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 102400 + 285156 = 320^2 + 534^2 .

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387551) 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, 1380 + ... + 1636.

It is an arithmetic number, because the mean of its divisors is an integer number (31605).

2³⁸⁷⁵⁵⁶ is an apocalyptic number.

It is an amenable number.

387556 is a deficient number, since it is larger than the sum of its proper divisors (370964).

387556 is a wasteful number, since it uses less digits than its factorization.

387556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303 (or 301 counting only the distinct ones).

The product of its digits is 25200, while the sum is 34.

The square root of 387556 is about 622.5399585569. The cubic root of 387556 is about 72.9084986043.

The spelling of 387556 in words is "three hundred eighty-seven thousand, five hundred fifty-six".