28030328 has 32 divisors (see below), whose sum is σ = 53721360. Its totient is φ = 13708800.

The previous prime is 28030319. The next prime is 28030333. The reversal of 28030328 is 82303082.

It is a junction number, because it is equal to n+sod(n) for n = 28030297 and 28030306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91151 + ... + 91457.

Almost surely, 2^28030328 is an apocalyptic number.

It is an amenable number.

28030328 is a deficient number, since it is larger than the sum of its proper divisors (25691032).

28030328 is a wasteful number, since it uses less digits than its factorization.

28030328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527 (or 523 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 28030328 is about 5294.3675731857. The cubic root of 28030328 is about 303.7684929496.

The spelling of 28030328 in words is "twenty-eight million, thirty thousand, three hundred twenty-eight".