16104538 has 4 divisors (see below), whose sum is σ = 24156810. Its totient is φ = 8052268.

The previous prime is 16104521. The next prime is 16104601. The reversal of 16104538 is 83540161.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 11580409 + 4524129 = 3403^2 + 2127^2 .

It is a super-2 number, since 2×16104538² = 518712288386888, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4026133 + ... + 4026136.

Almost surely, 2^16104538 is an apocalyptic number.

16104538 is a deficient number, since it is larger than the sum of its proper divisors (8052272).

16104538 is an equidigital number, since it uses as much as digits as its factorization.

16104538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8052271.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 16104538 is about 4013.0459753160. The cubic root of 16104538 is about 252.5318092135.

Adding to 16104538 its reverse (83540161), we get a palindrome (99644699).

The spelling of 16104538 in words is "sixteen million, one hundred four thousand, five hundred thirty-eight".