28650328 has 32 divisors (see below), whose sum is σ = 64627200. Its totient is φ = 11632032.

The previous prime is 28650317. The next prime is 28650329. The reversal of 28650328 is 82305682.

It is a junction number, because it is equal to n+sod(n) for n = 28650293 and 28650302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28650329) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 12400 + ... + 14527.

It is an arithmetic number, because the mean of its divisors is an integer number (2019600).

Almost surely, 2^28650328 is an apocalyptic number.

28650328 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28650328 is an abundant number, since it is smaller than the sum of its proper divisors (35976872).

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

28650328 is a wasteful number, since it uses less digits than its factorization.

28650328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26959 (or 26955 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 28650328 is about 5352.6001158316. The cubic root of 28650328 is about 305.9918547677.

The spelling of 28650328 in words is "twenty-eight million, six hundred fifty thousand, three hundred twenty-eight".