16828139 has 4 divisors (see below), whose sum is σ = 16855440. Its totient is φ = 16800840.

The previous prime is 16828117. The next prime is 16828151. The reversal of 16828139 is 93182861.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16828139 - 2¹² = 16824043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16828109) 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 3 ways as a sum of consecutive naturals, for example, 12704 + ... + 13965.

It is an arithmetic number, because the mean of its divisors is an integer number (4213860).

Almost surely, 2^16828139 is an apocalyptic number.

16828139 is a deficient number, since it is larger than the sum of its proper divisors (27301).

16828139 is an equidigital number, since it uses as much as digits as its factorization.

16828139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27300.

The product of its digits is 20736, while the sum is 38.

The square root of 16828139 is about 4102.2114767525. The cubic root of 16828139 is about 256.2587461619.

The spelling of 16828139 in words is "sixteen million, eight hundred twenty-eight thousand, one hundred thirty-nine".