28328270 has 16 divisors (see below), whose sum is σ = 51753168. Its totient is φ = 11161920.

The previous prime is 28328257. The next prime is 28328281. The reversal of 28328270 is 7282382.

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, 20471 + ... + 21810.

It is an arithmetic number, because the mean of its divisors is an integer number (3234573).

Almost surely, 2^28328270 is an apocalyptic number.

28328270 is a deficient number, since it is larger than the sum of its proper divisors (23424898).

28328270 is a wasteful number, since it uses less digits than its factorization.

28328270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42355.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 28328270 is about 5322.4308356239. The cubic root of 28328270 is about 304.8409813365.

The spelling of 28328270 in words is "twenty-eight million, three hundred twenty-eight thousand, two hundred seventy".