28444344 has 16 divisors (see below), whose sum is σ = 71110920. Its totient is φ = 9481440.

The previous prime is 28444343. The next prime is 28444357. The reversal of 28444344 is 44344482.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28444343) 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 3 ways as a sum of consecutive naturals, for example, 592567 + ... + 592614.

Almost surely, 2^28444344 is an apocalyptic number.

28444344 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28444344 is an abundant number, since it is smaller than the sum of its proper divisors (42666576).

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

28444344 is a wasteful number, since it uses less digits than its factorization.

28444344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1185190 (or 1185186 counting only the distinct ones).

The product of its digits is 49152, while the sum is 33.

The square root of 28444344 is about 5333.3239166584. The cubic root of 28444344 is about 305.2567720341.

The spelling of 28444344 in words is "twenty-eight million, four hundred forty-four thousand, three hundred forty-four".