28822286 has 4 divisors (see below), whose sum is σ = 43233432. Its totient is φ = 14411142.

The previous prime is 28822279. The next prime is 28822291. The reversal of 28822286 is 68222882.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7205570 + ... + 7205573.

It is an arithmetic number, because the mean of its divisors is an integer number (10808358).

Almost surely, 2^28822286 is an apocalyptic number.

28822286 is a deficient number, since it is larger than the sum of its proper divisors (14411146).

28822286 is a wasteful number, since it uses less digits than its factorization.

28822286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14411145.

The product of its digits is 49152, while the sum is 38.

The square root of 28822286 is about 5368.6391199260. The cubic root of 28822286 is about 306.6028172575.

It can be divided in two parts, 2 and 8822286, that added together give a palindrome (8822288).

The spelling of 28822286 in words is "twenty-eight million, eight hundred twenty-two thousand, two hundred eighty-six".