16387005 has 16 divisors (see below), whose sum is σ = 26270784. Its totient is φ = 8722560.

The previous prime is 16386989. The next prime is 16387027. The reversal of 16387005 is 50078361.

It is not a de Polignac number, because 16387005 - 2⁴ = 16386989 is a prime.

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, 11745 + ... + 13065.

It is an arithmetic number, because the mean of its divisors is an integer number (1641924).

Almost surely, 2^16387005 is an apocalyptic number.

16387005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16387005 is a deficient number, since it is larger than the sum of its proper divisors (9883779).

16387005 is a wasteful number, since it uses less digits than its factorization.

16387005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2156.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 16387005 is about 4048.0865850424. The cubic root of 16387005 is about 253.9996951657. Note that the first 3 decimals are identical.

The spelling of 16387005 in words is "sixteen million, three hundred eighty-seven thousand, five".