16319394 has 128 divisors (see below), whose sum is σ = 46287360. Its totient is φ = 4199040.

The previous prime is 16319383. The next prime is 16319399. The reversal of 16319394 is 49391361.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16319399) 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 63 ways as a sum of consecutive naturals, for example, 398014 + ... + 398054.

It is an arithmetic number, because the mean of its divisors is an integer number (361620).

Almost surely, 2^16319394 is an apocalyptic number.

16319394 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 16319394, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23143680).

16319394 is an abundant number, since it is smaller than the sum of its proper divisors (29967966).

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

16319394 is an equidigital number, since it uses as much as digits as its factorization.

16319394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84 (or 66 counting only the distinct ones).

The product of its digits is 17496, while the sum is 36.

The square root of 16319394 is about 4039.7269709722. The cubic root of 16319394 is about 253.6498885986.

It can be divided in two parts, 1631 and 9394, that added together give a square (11025 = 105²).

The spelling of 16319394 in words is "sixteen million, three hundred nineteen thousand, three hundred ninety-four".