28025328 has 20 divisors (see below), whose sum is σ = 72398888. Its totient is φ = 9341760.

The previous prime is 28025311. The next prime is 28025351. The reversal of 28025328 is 82352082.

It is a junction number, because it is equal to n+sod(n) for n = 28025295 and 28025304.

It is a congruent number.

It is an unprimeable number.

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, 291883 + ... + 291978.

Almost surely, 2^28025328 is an apocalyptic number.

It is an amenable number.

28025328 is an abundant number, since it is smaller than the sum of its proper divisors (44373560).

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

28025328 is a wasteful number, since it uses less digits than its factorization.

28025328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 583872 (or 583866 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 28025328 is about 5293.8953521958. The cubic root of 28025328 is about 303.7504299813.

The spelling of 28025328 in words is "twenty-eight million, twenty-five thousand, three hundred twenty-eight".