28865650 has 48 divisors (see below), whose sum is σ = 60496128. Its totient is φ = 10152000.

The previous prime is 28865623. The next prime is 28865663. The reversal of 28865650 is 5656882.

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 23 ways as a sum of consecutive naturals, for example, 16204 + ... + 17896.

It is an arithmetic number, because the mean of its divisors is an integer number (1260336).

Almost surely, 2^28865650 is an apocalyptic number.

28865650 is an abundant number, since it is smaller than the sum of its proper divisors (31630478).

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

28865650 is a wasteful number, since it uses less digits than its factorization.

28865650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1747 (or 1742 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 40.

The square root of 28865650 is about 5372.6762418742. The cubic root of 28865650 is about 306.7565046078.

The spelling of 28865650 in words is "twenty-eight million, eight hundred sixty-five thousand, six hundred fifty".