16091604 has 36 divisors (see below), whose sum is σ = 41991040. Its totient is φ = 5190480.

The previous prime is 16091599. The next prime is 16091611. The reversal of 16091604 is 40619061.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6094 + ... + 8325.

Almost surely, 2^16091604 is an apocalyptic number.

It is an amenable number.

16091604 is an abundant number, since it is smaller than the sum of its proper divisors (25899436).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16091604 is a wasteful number, since it uses less digits than its factorization.

16091604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14460 (or 14455 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 16091604 is about 4011.4341575053. The cubic root of 16091604 is about 252.4641860128.

The spelling of 16091604 in words is "sixteen million, ninety-one thousand, six hundred four".