28865332 has 24 divisors (see below), whose sum is σ = 54311040. Its totient is φ = 13380480.

The previous prime is 28865327. The next prime is 28865377. The reversal of 28865332 is 23356882.

It is a junction number, because it is equal to n+sod(n) for n = 28865291 and 28865300.

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 7 ways as a sum of consecutive naturals, for example, 469 + ... + 7612.

It is an arithmetic number, because the mean of its divisors is an integer number (2262960).

Almost surely, 2^28865332 is an apocalyptic number.

It is an amenable number.

28865332 is a deficient number, since it is larger than the sum of its proper divisors (25445708).

28865332 is a wasteful number, since it uses less digits than its factorization.

28865332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8151 (or 8149 counting only the distinct ones).

The product of its digits is 69120, while the sum is 37.

The square root of 28865332 is about 5372.6466476030. The cubic root of 28865332 is about 306.7553781371.

The spelling of 28865332 in words is "twenty-eight million, eight hundred sixty-five thousand, three hundred thirty-two".