20443344 has 20 divisors (see below), whose sum is σ = 52812096. Its totient is φ = 6814432.

The previous prime is 20443331. The next prime is 20443363. The reversal of 20443344 is 44334402.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

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 3 ways as a sum of consecutive naturals, for example, 212904 + ... + 212999.

Almost surely, 2^20443344 is an apocalyptic number.

20443344 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20443344 is an abundant number, since it is smaller than the sum of its proper divisors (32368752).

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

20443344 is a wasteful number, since it uses less digits than its factorization.

20443344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425914 (or 425908 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 24.

The square root of 20443344 is about 4521.4316316848. The cubic root of 20443344 is about 273.4328225311.

Adding to 20443344 its reverse (44334402), we get a palindrome (64777746).

The spelling of 20443344 in words is "twenty million, four hundred forty-three thousand, three hundred forty-four".