16538356 has 6 divisors (see below), whose sum is σ = 28942130. Its totient is φ = 8269176.

The previous prime is 16538351. The next prime is 16538377. The reversal of 16538356 is 65383561.

It can be written as a sum of positive squares in only one way, i.e., 16483600 + 54756 = 4060^2 + 234^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16538351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2067291 + ... + 2067298.

Almost surely, 2^16538356 is an apocalyptic number.

It is an amenable number.

16538356 is a deficient number, since it is larger than the sum of its proper divisors (12403774).

16538356 is a wasteful number, since it uses less digits than its factorization.

16538356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4134593 (or 4134591 counting only the distinct ones).

The product of its digits is 64800, while the sum is 37.

The square root of 16538356 is about 4066.7377589414. The cubic root of 16538356 is about 254.7792835741.

The spelling of 16538356 in words is "sixteen million, five hundred thirty-eight thousand, three hundred fifty-six".