16587387 has 12 divisors (see below), whose sum is σ = 24732864. Its totient is φ = 10701360.

The previous prime is 16587377. The next prime is 16587397. The reversal of 16587387 is 78378561.

It is an interprime number because it is at equal distance from previous prime (16587377) and next prime (16587397).

It is not a de Polignac number, because 16587387 - 2¹⁵ = 16554619 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16587367) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29448 + ... + 30005.

It is an arithmetic number, because the mean of its divisors is an integer number (2061072).

Almost surely, 2^16587387 is an apocalyptic number.

16587387 is a deficient number, since it is larger than the sum of its proper divisors (8145477).

16587387 is a wasteful number, since it uses less digits than its factorization.

16587387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59490 (or 59487 counting only the distinct ones).

The product of its digits is 282240, while the sum is 45.

The square root of 16587387 is about 4072.7615938083. The cubic root of 16587387 is about 255.0308151918.

It can be divided in two parts, 1658 and 7387, that added together give a triangular number (9045 = T₁₃₄).

The spelling of 16587387 in words is "sixteen million, five hundred eighty-seven thousand, three hundred eighty-seven".