28844628 has 48 divisors (see below), whose sum is σ = 69189120. Its totient is φ = 9349600.

The previous prime is 28844623. The next prime is 28844659. The reversal of 28844628 is 82644882.

It is a self number, because there is not a number n which added to its sum of digits gives 28844628.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28844623) 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, 92593 + ... + 92903.

It is an arithmetic number, because the mean of its divisors is an integer number (1441440).

Almost surely, 2^28844628 is an apocalyptic number.

It is an amenable number.

28844628 is an abundant number, since it is smaller than the sum of its proper divisors (40344492).

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

28844628 is a wasteful number, since it uses less digits than its factorization.

28844628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508 (or 506 counting only the distinct ones).

The product of its digits is 196608, while the sum is 42.

The square root of 28844628 is about 5370.7195048708. The cubic root of 28844628 is about 306.6820192902.

The spelling of 28844628 in words is "twenty-eight million, eight hundred forty-four thousand, six hundred twenty-eight".