28548884 has 48 divisors (see below), whose sum is σ = 62149248. Its totient is φ = 11173248.

The previous prime is 28548869. The next prime is 28548893. The reversal of 28548884 is 48884582.

It is a plaindrome in base 15.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38582 + ... + 39314.

It is an arithmetic number, because the mean of its divisors is an integer number (1294776).

Almost surely, 2^28548884 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 28548884, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31074624).

28548884 is an abundant number, since it is smaller than the sum of its proper divisors (33600364).

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

28548884 is a wasteful number, since it uses less digits than its factorization.

28548884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864 (or 862 counting only the distinct ones).

The product of its digits is 655360, while the sum is 47.

The square root of 28548884 is about 5343.1155705262. The cubic root of 28548884 is about 305.6302795441.

The spelling of 28548884 in words is "twenty-eight million, five hundred forty-eight thousand, eight hundred eighty-four".