16504132 has 24 divisors (see below), whose sum is σ = 30303000. Its totient is φ = 7854336.

The previous prime is 16504079. The next prime is 16504139. The reversal of 16504132 is 23140561.

It can be written as a sum of positive squares in 4 ways, for example, as 5308416 + 11195716 = 2304^2 + 3346^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16504139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7494 + ... + 9442.

It is an arithmetic number, because the mean of its divisors is an integer number (1262625).

Almost surely, 2^16504132 is an apocalyptic number.

It is an amenable number.

16504132 is a deficient number, since it is larger than the sum of its proper divisors (13798868).

16504132 is a wasteful number, since it uses less digits than its factorization.

16504132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2055 (or 2053 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 16504132 is about 4062.5277845204. The cubic root of 16504132 is about 254.6034178915.

Adding to 16504132 its reverse (23140561), we get a palindrome (39644693).

The spelling of 16504132 in words is "sixteen million, five hundred four thousand, one hundred thirty-two".