28238124 has 12 divisors (see below), whose sum is σ = 65888984. Its totient is φ = 9412704.

The previous prime is 28238107. The next prime is 28238129. The reversal of 28238124 is 42183282.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 28238091 and 28238100.

It is not an unprimeable number, because it can be changed into a prime (28238129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1176577 + ... + 1176600.

Almost surely, 2^28238124 is an apocalyptic number.

It is an amenable number.

28238124 is an abundant number, since it is smaller than the sum of its proper divisors (37650860).

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

28238124 is a wasteful number, since it uses less digits than its factorization.

28238124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2353184 (or 2353182 counting only the distinct ones).

The product of its digits is 6144, while the sum is 30.

The square root of 28238124 is about 5313.9555888246. The cubic root of 28238124 is about 304.5172835388.

The spelling of 28238124 in words is "twenty-eight million, two hundred thirty-eight thousand, one hundred twenty-four".