387515 has 16 divisors (see below), whose sum is σ = 508032. Its totient is φ = 282624.

The previous prime is 387509. The next prime is 387529. The reversal of 387515 is 515783.

It is a cyclic number.

It is not a de Polignac number, because 387515 - 2¹² = 383419 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3947 + ... + 4043.

It is an arithmetic number, because the mean of its divisors is an integer number (31752).

2³⁸⁷⁵¹⁵ is an apocalyptic number.

387515 is a deficient number, since it is larger than the sum of its proper divisors (120517).

387515 is a wasteful number, since it uses less digits than its factorization.

387515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166.

The product of its digits is 4200, while the sum is 29.

The square root of 387515 is about 622.5070280728. The cubic root of 387515 is about 72.9059274887.

The spelling of 387515 in words is "three hundred eighty-seven thousand, five hundred fifteen".