16004992 has 32 divisors (see below), whose sum is σ = 33568200. Its totient is φ = 7580160.

The previous prime is 16004977. The next prime is 16004999. The reversal of 16004992 is 29940061.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16004999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 859 + ... + 5722.

Almost surely, 2^16004992 is an apocalyptic number.

It is an amenable number.

16004992 is an abundant number, since it is smaller than the sum of its proper divisors (17563208).

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

16004992 is an equidigital number, since it uses as much as digits as its factorization.

16004992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6614 (or 6602 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 16004992 is about 4000.6239513356. The cubic root of 16004992 is about 252.0104136118.

The spelling of 16004992 in words is "sixteen million, four thousand, nine hundred ninety-two".