17128139 has 16 divisors (see below), whose sum is σ = 20851200. Its totient is φ = 13742784.

The previous prime is 17128127. The next prime is 17128141. The reversal of 17128139 is 93182171.

It is a cyclic number.

It is not a de Polignac number, because 17128139 - 2¹² = 17124043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (17128039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11114 + ... + 12560.

It is an arithmetic number, because the mean of its divisors is an integer number (1303200).

Almost surely, 2^17128139 is an apocalyptic number.

17128139 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

17128139 is a deficient number, since it is larger than the sum of its proper divisors (3723061).

17128139 is a wasteful number, since it uses less digits than its factorization.

17128139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1562.

The product of its digits is 3024, while the sum is 32.

The square root of 17128139 is about 4138.6155897836. The cubic root of 17128139 is about 257.7725846916.

The spelling of 17128139 in words is "seventeen million, one hundred twenty-eight thousand, one hundred thirty-nine".