17028139 has 4 divisors (see below), whose sum is σ = 17082856. Its totient is φ = 16973424.

The previous prime is 17028131. The next prime is 17028149. The reversal of 17028139 is 93182071.

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 17028139 - 2³ = 17028131 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 17028139.

It is not an unprimeable number, because it can be changed into a prime (17028131) 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, 26889 + ... + 27514.

It is an arithmetic number, because the mean of its divisors is an integer number (4270714).

Almost surely, 2^17028139 is an apocalyptic number.

17028139 is a deficient number, since it is larger than the sum of its proper divisors (54717).

17028139 is an equidigital number, since it uses as much as digits as its factorization.

17028139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54716.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 17028139 is about 4126.5165696990. The cubic root of 17028139 is about 257.2699500634.

The spelling of 17028139 in words is "seventeen million, twenty-eight thousand, one hundred thirty-nine".