28355124 has 72 divisors (see below), whose sum is σ = 78097600. Its totient is φ = 8003856.

The previous prime is 28355123. The next prime is 28355143. The reversal of 28355124 is 42155382.

It is a junction number, because it is equal to n+sod(n) for n = 28355091 and 28355100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28355123) 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 23 ways as a sum of consecutive naturals, for example, 341587 + ... + 341669.

Almost surely, 2^28355124 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 28355124, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39048800).

28355124 is an abundant number, since it is smaller than the sum of its proper divisors (49742476).

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

28355124 is an equidigital number, since it uses as much as digits as its factorization.

28355124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194 (or 95 counting only the distinct ones).

The product of its digits is 9600, while the sum is 30.

The square root of 28355124 is about 5324.9529575387. The cubic root of 28355124 is about 304.9372763608.

The spelling of 28355124 in words is "twenty-eight million, three hundred fifty-five thousand, one hundred twenty-four".