28444746 has 16 divisors (see below), whose sum is σ = 62061408. Its totient is φ = 8619600.

The previous prime is 28444739. The next prime is 28444747. The reversal of 28444746 is 64744482.

It is not an unprimeable number, because it can be changed into a prime (28444747) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215425 + ... + 215556.

It is an arithmetic number, because the mean of its divisors is an integer number (3878838).

Almost surely, 2^28444746 is an apocalyptic number.

28444746 is an abundant number, since it is smaller than the sum of its proper divisors (33616662).

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

28444746 is a wasteful number, since it uses less digits than its factorization.

28444746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430997.

The product of its digits is 172032, while the sum is 39.

The square root of 28444746 is about 5333.3616040917. The cubic root of 28444746 is about 305.2582100779.

The spelling of 28444746 in words is "twenty-eight million, four hundred forty-four thousand, seven hundred forty-six".