16987347 has 16 divisors (see below), whose sum is σ = 27102880. Its totient is φ = 10453536.

The previous prime is 16987343. The next prime is 16987379. The reversal of 16987347 is 74378961.

It is not a de Polignac number, because 16987347 - 2² = 16987343 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16987343) 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 15 ways as a sum of consecutive naturals, for example, 23848 + ... + 24549.

It is an arithmetic number, because the mean of its divisors is an integer number (1693930).

Almost surely, 2^16987347 is an apocalyptic number.

16987347 is a deficient number, since it is larger than the sum of its proper divisors (10115533).

16987347 is a wasteful number, since it uses less digits than its factorization.

16987347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48419 (or 48413 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The square root of 16987347 is about 4121.5709383680. The cubic root of 16987347 is about 257.0643502403.

It can be divided in two parts, 1698 and 7347, that added together give a triangular number (9045 = T₁₃₄).

The spelling of 16987347 in words is "sixteen million, nine hundred eighty-seven thousand, three hundred forty-seven".