16828987 has 8 divisors (see below), whose sum is σ = 19356896. Its totient is φ = 14332032.

The previous prime is 16828967. The next prime is 16828991. The reversal of 16828987 is 78982861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16828987 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16828987.

It is not an unprimeable number, because it can be changed into a prime (16828937) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6558 + ... + 8755.

It is an arithmetic number, because the mean of its divisors is an integer number (2419612).

Almost surely, 2^16828987 is an apocalyptic number.

16828987 is a deficient number, since it is larger than the sum of its proper divisors (2527909).

16828987 is a wasteful number, since it uses less digits than its factorization.

16828987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15477.

The product of its digits is 387072, while the sum is 49.

The square root of 16828987 is about 4102.3148343344. The cubic root of 16828987 is about 256.2630505350.

The spelling of 16828987 in words is "sixteen million, eight hundred twenty-eight thousand, nine hundred eighty-seven".