28286944 has 48 divisors (see below), whose sum is σ = 65384928. Its totient is φ = 11791872.

The previous prime is 28286939. The next prime is 28286957. The reversal of 28286944 is 44968282.

It is a self number, because there is not a number n which added to its sum of digits gives 28286944.

It is a congruent number.

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, 6582 + ... + 9994.

It is an arithmetic number, because the mean of its divisors is an integer number (1362186).

Almost surely, 2^28286944 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28286944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32692464).

28286944 is an abundant number, since it is smaller than the sum of its proper divisors (37097984).

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

28286944 is a wasteful number, since it uses less digits than its factorization.

28286944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3467 (or 3459 counting only the distinct ones).

The product of its digits is 221184, while the sum is 43.

The square root of 28286944 is about 5318.5471700456. The cubic root of 28286944 is about 304.6926726047.

The spelling of 28286944 in words is "twenty-eight million, two hundred eighty-six thousand, nine hundred forty-four".