16395904 has 64 divisors (see below), whose sum is σ = 38678400. Its totient is φ = 6773760.

The previous prime is 16395901. The next prime is 16395937. The reversal of 16395904 is 40959361.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (16395901) 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 7 ways as a sum of consecutive naturals, for example, 25669 + ... + 26299.

It is an arithmetic number, because the mean of its divisors is an integer number (604350).

Almost surely, 2^16395904 is an apocalyptic number.

16395904 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16395904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19339200).

16395904 is an abundant number, since it is smaller than the sum of its proper divisors (22282496).

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

16395904 is an equidigital number, since it uses as much as digits as its factorization.

16395904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681 (or 669 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 37.

The square root of 16395904 is about 4049.1855971294. The cubic root of 16395904 is about 254.0456652143.

The spelling of 16395904 in words is "sixteen million, three hundred ninety-five thousand, nine hundred four".