28033286 has 8 divisors (see below), whose sum is σ = 42148344. Its totient is φ = 13983840.

The previous prime is 28033283. The next prime is 28033337. The reversal of 28033286 is 68233082.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28033283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15320 + ... + 17051.

It is an arithmetic number, because the mean of its divisors is an integer number (5268543).

Almost surely, 2^28033286 is an apocalyptic number.

28033286 is a deficient number, since it is larger than the sum of its proper divisors (14115058).

28033286 is a wasteful number, since it uses less digits than its factorization.

28033286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32806.

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 28033286 is about 5294.6469192950. The cubic root of 28033286 is about 303.7791779904.

The spelling of 28033286 in words is "twenty-eight million, thirty-three thousand, two hundred eighty-six".