20393344 has 32 divisors (see below), whose sum is σ = 41034600. Its totient is φ = 10094592.

The previous prime is 20393333. The next prime is 20393363. The reversal of 20393344 is 44339302.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 12952 + ... + 14440.

Almost surely, 2^20393344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20393344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20517300).

20393344 is an abundant number, since it is smaller than the sum of its proper divisors (20641256).

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

20393344 is a wasteful number, since it uses less digits than its factorization.

20393344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1610 (or 1598 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 28.

The square root of 20393344 is about 4515.8990245576. The cubic root of 20393344 is about 273.2097213553.

The spelling of 20393344 in words is "twenty million, three hundred ninety-three thousand, three hundred forty-four".