16331904 has 48 divisors (see below), whose sum is σ = 47000070. Its totient is φ = 5443584.

The previous prime is 16331879. The next prime is 16331921. The reversal of 16331904 is 40913361.

It can be written as a sum of positive squares in only one way, i.e., 8714304 + 7617600 = 2952^2 + 2760^2 .

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5937 + ... + 8240.

Almost surely, 2^16331904 is an apocalyptic number.

It is an amenable number.

16331904 is an abundant number, since it is smaller than the sum of its proper divisors (30668166).

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

16331904 is a wasteful number, since it uses less digits than its factorization.

16331904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14197 (or 14182 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 16331904 is about 4041.2750463189. The cubic root of 16331904 is about 253.7146857276.

The spelling of 16331904 in words is "sixteen million, three hundred thirty-one thousand, nine hundred four".