28328124 has 24 divisors (see below), whose sum is σ = 72108288. Its totient is φ = 8584240.

The previous prime is 28328123. The next prime is 28328173. The reversal of 28328124 is 42182382.

It is a junction number, because it is equal to n+sod(n) for n = 28328091 and 28328100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28328123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107172 + ... + 107435.

It is an arithmetic number, because the mean of its divisors is an integer number (3004512).

Almost surely, 2^28328124 is an apocalyptic number.

It is an amenable number.

28328124 is an abundant number, since it is smaller than the sum of its proper divisors (43780164).

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

28328124 is a wasteful number, since it uses less digits than its factorization.

28328124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214625 (or 214623 counting only the distinct ones).

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

The square root of 28328124 is about 5322.4171200687. The cubic root of 28328124 is about 304.8404576328.

The spelling of 28328124 in words is "twenty-eight million, three hundred twenty-eight thousand, one hundred twenty-four".