28866236 has 24 divisors (see below), whose sum is σ = 57918336. Its totient is φ = 12331440.

The previous prime is 28866197. The next prime is 28866241. The reversal of 28866236 is 63266882.

It is a junction number, because it is equal to n+sod(n) for n = 28866193 and 28866202.

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, 8231 + ... + 11201.

It is an arithmetic number, because the mean of its divisors is an integer number (2413264).

Almost surely, 2^28866236 is an apocalyptic number.

It is an amenable number.

28866236 is an abundant number, since it is smaller than the sum of its proper divisors (29052100).

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

28866236 is a wasteful number, since it uses less digits than its factorization.

28866236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3329 (or 3327 counting only the distinct ones).

The product of its digits is 165888, while the sum is 41.

The square root of 28866236 is about 5372.7307768024. The cubic root of 28866236 is about 306.7585804095.

The spelling of 28866236 in words is "twenty-eight million, eight hundred sixty-six thousand, two hundred thirty-six".