16390517 has 16 divisors (see below), whose sum is σ = 19582080. Its totient is φ = 13521600.

The previous prime is 16390489. The next prime is 16390531. The reversal of 16390517 is 71509361.

It is a cyclic number.

It is not a de Polignac number, because 16390517 - 2⁶ = 16390453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16390547) 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, 7784 + ... + 9662.

It is an arithmetic number, because the mean of its divisors is an integer number (1223880).

Almost surely, 2^16390517 is an apocalyptic number.

It is an amenable number.

16390517 is a deficient number, since it is larger than the sum of its proper divisors (3191563).

16390517 is a wasteful number, since it uses less digits than its factorization.

16390517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1964.

The product of its (nonzero) digits is 5670, while the sum is 32.

The square root of 16390517 is about 4048.5203469910. The cubic root of 16390517 is about 254.0178392827.

Adding to 16390517 its reverse (71509361), we get a palindrome (87899878).

The spelling of 16390517 in words is "sixteen million, three hundred ninety thousand, five hundred seventeen".