28444836 has 48 divisors (see below), whose sum is σ = 79156224. Its totient is φ = 7773216.

The previous prime is 28444831. The next prime is 28444837. The reversal of 28444836 is 63844482.

It is a junction number, because it is equal to n+sod(n) for n = 28444794 and 28444803.

It is not an unprimeable number, because it can be changed into a prime (28444831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5430 + ... + 9293.

It is an arithmetic number, because the mean of its divisors is an integer number (1649088).

Almost surely, 2^28444836 is an apocalyptic number.

It is an amenable number.

28444836 is an abundant number, since it is smaller than the sum of its proper divisors (50711388).

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

28444836 is a wasteful number, since it uses less digits than its factorization.

28444836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14760 (or 14758 counting only the distinct ones).

The product of its digits is 147456, while the sum is 39.

The square root of 28444836 is about 5333.3700415403. The cubic root of 28444836 is about 305.2585320262.

The spelling of 28444836 in words is "twenty-eight million, four hundred forty-four thousand, eight hundred thirty-six".