16517138 has 16 divisors (see below), whose sum is σ = 27138240. Its totient is φ = 7477200.

The previous prime is 16517129. The next prime is 16517143. The reversal of 16517138 is 83171561.

It is a super-2 number, since 2×16517138² = 545631695422088, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4523 + ... + 7313.

It is an arithmetic number, because the mean of its divisors is an integer number (1696140).

Almost surely, 2^16517138 is an apocalyptic number.

16517138 is a deficient number, since it is larger than the sum of its proper divisors (10621102).

16517138 is a wasteful number, since it uses less digits than its factorization.

16517138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3073.

The product of its digits is 5040, while the sum is 32.

The square root of 16517138 is about 4064.1281967969. The cubic root of 16517138 is about 254.6702799880.

Adding to 16517138 its reverse (83171561), we get a palindrome (99688699).

The spelling of 16517138 in words is "sixteen million, five hundred seventeen thousand, one hundred thirty-eight".