16307985 has 16 divisors (see below), whose sum is σ = 27466560. Its totient is φ = 8239680.

The previous prime is 16307983. The next prime is 16307999. The reversal of 16307985 is 58970361.

It is not a de Polignac number, because 16307985 - 2¹ = 16307983 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16307983) by changing a digit.

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, 28326 + ... + 28895.

It is an arithmetic number, because the mean of its divisors is an integer number (1716660).

Almost surely, 2^16307985 is an apocalyptic number.

16307985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16307985 is a deficient number, since it is larger than the sum of its proper divisors (11158575).

16307985 is a wasteful number, since it uses less digits than its factorization.

16307985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57248.

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 16307985 is about 4038.3146237013. The cubic root of 16307985 is about 253.5907653611.

The spelling of 16307985 in words is "sixteen million, three hundred seven thousand, nine hundred eighty-five".