28287336 has 64 divisors (see below), whose sum is σ = 88174080. Its totient is φ = 7346880.

The previous prime is 28287289. The next prime is 28287341. The reversal of 28287336 is 63378282.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 28287294 and 28287303.

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 15 ways as a sum of consecutive naturals, for example, 5806 + ... + 9501.

It is an arithmetic number, because the mean of its divisors is an integer number (1377720).

Almost surely, 2^28287336 is an apocalyptic number.

It is an amenable number.

28287336 is an abundant number, since it is smaller than the sum of its proper divisors (59886744).

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

28287336 is a wasteful number, since it uses less digits than its factorization.

28287336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15334 (or 15330 counting only the distinct ones).

The product of its digits is 96768, while the sum is 39.

The square root of 28287336 is about 5318.5840220871. The cubic root of 28287336 is about 304.6940800735.

It can be divided in two parts, 28 and 287336, that multiplied together give a palindrome (8045408).

The spelling of 28287336 in words is "twenty-eight million, two hundred eighty-seven thousand, three hundred thirty-six".