16928139 has 16 divisors (see below), whose sum is σ = 23445504. Its totient is φ = 10852800.

The previous prime is 16928059. The next prime is 16928143. The reversal of 16928139 is 93182961.

It is not a de Polignac number, because 16928139 - 2⁷ = 16928011 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16928097 and 16928106.

It is not an unprimeable number, because it can be changed into a prime (16928179) 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, 17287 + ... + 18239.

It is an arithmetic number, because the mean of its divisors is an integer number (1465344).

Almost surely, 2^16928139 is an apocalyptic number.

16928139 is a deficient number, since it is larger than the sum of its proper divisors (6517365).

16928139 is a wasteful number, since it uses less digits than its factorization.

16928139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1178.

The product of its digits is 23328, while the sum is 39.

The square root of 16928139 is about 4114.3819706002. The cubic root of 16928139 is about 256.7653437039.

The spelling of 16928139 in words is "sixteen million, nine hundred twenty-eight thousand, one hundred thirty-nine".