28683286 has 4 divisors (see below), whose sum is σ = 43024932. Its totient is φ = 14341642.

The previous prime is 28683283. The next prime is 28683289. The reversal of 28683286 is 68238682.

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

It is an interprime number because it is at equal distance from previous prime (28683283) and next prime (28683289).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28683283) by changing a digit.

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 as a sum of consecutive naturals, namely, 7170820 + ... + 7170823.

It is an arithmetic number, because the mean of its divisors is an integer number (10756233).

Almost surely, 2^28683286 is an apocalyptic number.

28683286 is a deficient number, since it is larger than the sum of its proper divisors (14341646).

28683286 is a wasteful number, since it uses less digits than its factorization.

28683286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14341645.

The product of its digits is 221184, while the sum is 43.

The square root of 28683286 is about 5355.6779216081. The cubic root of 28683286 is about 306.1091427206.

The spelling of 28683286 in words is "twenty-eight million, six hundred eighty-three thousand, two hundred eighty-six".