16396445 has 8 divisors (see below), whose sum is σ = 21189336. Its totient is φ = 12108096.

The previous prime is 16396423. The next prime is 16396453. The reversal of 16396445 is 54469361.

It can be written as a sum of positive squares in 4 ways, for example, as 219961 + 16176484 = 469^2 + 4022^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-16396445 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 16396399 and 16396408.

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 7 ways as a sum of consecutive naturals, for example, 126062 + ... + 126191.

It is an arithmetic number, because the mean of its divisors is an integer number (2648667).

Almost surely, 2^16396445 is an apocalyptic number.

It is an amenable number.

16396445 is a deficient number, since it is larger than the sum of its proper divisors (4792891).

16396445 is a wasteful number, since it uses less digits than its factorization.

16396445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252271.

The product of its digits is 77760, while the sum is 38.

The square root of 16396445 is about 4049.2524001351. The cubic root of 16396445 is about 254.0484593510.

The spelling of 16396445 in words is "sixteen million, three hundred ninety-six thousand, four hundred forty-five".