28845444 has 24 divisors (see below), whose sum is σ = 67435200. Its totient is φ = 9596704.

The previous prime is 28845431. The next prime is 28845457. The reversal of 28845444 is 44454882.

It is an interprime number because it is at equal distance from previous prime (28845431) and next prime (28845457).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5182 + ... + 9194.

It is an arithmetic number, because the mean of its divisors is an integer number (2809800).

Almost surely, 2^28845444 is an apocalyptic number.

It is an amenable number.

28845444 is an abundant number, since it is smaller than the sum of its proper divisors (38589756).

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

28845444 is a wasteful number, since it uses less digits than its factorization.

28845444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4619 (or 4617 counting only the distinct ones).

The product of its digits is 163840, while the sum is 39.

The square root of 28845444 is about 5370.7954718086. The cubic root of 28845444 is about 306.6849112229.

The spelling of 28845444 in words is "twenty-eight million, eight hundred forty-five thousand, four hundred forty-four".