28500044 has 12 divisors (see below), whose sum is σ = 49920024. Its totient is φ = 14237184.

The previous prime is 28500029. The next prime is 28500047. The reversal of 28500044 is 44000582.

It is a junction number, because it is equal to n+sod(n) for n = 28499992 and 28500019.

It is not an unprimeable number, because it can be changed into a prime (28500047) 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, 3212 + ... + 8204.

It is an arithmetic number, because the mean of its divisors is an integer number (4160002).

Almost surely, 2^28500044 is an apocalyptic number.

It is an amenable number.

28500044 is a deficient number, since it is larger than the sum of its proper divisors (21419980).

28500044 is a wasteful number, since it uses less digits than its factorization.

28500044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6424 (or 6422 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 28500044 is about 5338.5432469916. The cubic root of 28500044 is about 305.4558944080.

The spelling of 28500044 in words is "twenty-eight million, five hundred thousand, forty-four".