16530916 has 12 divisors (see below), whose sum is σ = 29022588. Its totient is φ = 8238752.

The previous prime is 16530901. The next prime is 16530929. The reversal of 16530916 is 61903561.

It can be written as a sum of positive squares in 2 ways, for example, as 5308416 + 11222500 = 2304^2 + 3350^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5251 + ... + 7786.

It is an arithmetic number, because the mean of its divisors is an integer number (2418549).

Almost surely, 2^16530916 is an apocalyptic number.

It is an amenable number.

16530916 is a deficient number, since it is larger than the sum of its proper divisors (12491672).

16530916 is a wasteful number, since it uses less digits than its factorization.

16530916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13358 (or 13356 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 16530916 is about 4065.8229179343. The cubic root of 16530916 is about 254.7410725574.

The spelling of 16530916 in words is "sixteen million, five hundred thirty thousand, nine hundred sixteen".