16393445 has 16 divisors (see below), whose sum is σ = 20355840. Its totient is φ = 12667200.

The previous prime is 16393397. The next prime is 16393453. The reversal of 16393445 is 54439361.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-16393445 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 17540 + ... + 18450.

It is an arithmetic number, because the mean of its divisors is an integer number (1272240).

Almost surely, 2^16393445 is an apocalyptic number.

It is an amenable number.

16393445 is a deficient number, since it is larger than the sum of its proper divisors (3962395).

16393445 is an equidigital number, since it uses as much as digits as its factorization.

16393445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1036.

The product of its digits is 38880, while the sum is 35.

The square root of 16393445 is about 4048.8819444385. The cubic root of 16393445 is about 254.0329642876.

The spelling of 16393445 in words is "sixteen million, three hundred ninety-three thousand, four hundred forty-five".