28028952 has 96 divisors (see below), whose sum is σ = 91353600. Its totient is φ = 7584192.

The previous prime is 28028921. The next prime is 28028969. The reversal of 28028952 is 25982082.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 8113 + ... + 11039.

It is an arithmetic number, because the mean of its divisors is an integer number (951600).

Almost surely, 2^28028952 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 28028952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45676800).

28028952 is an abundant number, since it is smaller than the sum of its proper divisors (63324648).

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

28028952 is a wasteful number, since it uses less digits than its factorization.

28028952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2965 (or 2958 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 28028952 is about 5294.2376221700. The cubic root of 28028952 is about 303.7635222350.

The spelling of 28028952 in words is "twenty-eight million, twenty-eight thousand, nine hundred fifty-two".