28332630 has 24 divisors (see below), whose sum is σ = 73665072. Its totient is φ = 7555344.

The previous prime is 28332617. The next prime is 28332641. The reversal of 28332630 is 3623382.

28332630 is a `hidden beast` number, since 28 + 3 + 3 + 2 + 630 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 28332594 and 28332603.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 157314 + ... + 157493.

It is an arithmetic number, because the mean of its divisors is an integer number (3069378).

Almost surely, 2^28332630 is an apocalyptic number.

28332630 is an abundant number, since it is smaller than the sum of its proper divisors (45332442).

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

28332630 is a wasteful number, since it uses less digits than its factorization.

28332630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314820 (or 314817 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 28332630 is about 5322.8404071511. The cubic root of 28332630 is about 304.8566198782.

The spelling of 28332630 in words is "twenty-eight million, three hundred thirty-two thousand, six hundred thirty".