28238852 has 12 divisors (see below), whose sum is σ = 50228556. Its totient is φ = 13887840.

The previous prime is 28238849. The next prime is 28238857. The reversal of 28238852 is 25883282.

It can be written as a sum of positive squares in 2 ways, for example, as 948676 + 27290176 = 974^2 + 5224^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28238857) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 57623 + ... + 58110.

It is an arithmetic number, because the mean of its divisors is an integer number (4185713).

Almost surely, 2^28238852 is an apocalyptic number.

It is an amenable number.

28238852 is a deficient number, since it is larger than the sum of its proper divisors (21989704).

28238852 is a wasteful number, since it uses less digits than its factorization.

28238852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115798 (or 115796 counting only the distinct ones).

The product of its digits is 61440, while the sum is 38.

The square root of 28238852 is about 5314.0240872619. The cubic root of 28238852 is about 304.5199004109.

The spelling of 28238852 in words is "twenty-eight million, two hundred thirty-eight thousand, eight hundred fifty-two".