28333285 has 8 divisors (see below), whose sum is σ = 34076160. Its totient is φ = 22615824.

The previous prime is 28333273. The next prime is 28333289. The reversal of 28333285 is 58233382.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 28333285 - 2²³ = 19944677 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28333285.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28333289) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3805 + ... + 8434.

It is an arithmetic number, because the mean of its divisors is an integer number (4259520).

Almost surely, 2^28333285 is an apocalyptic number.

It is an amenable number.

28333285 is a deficient number, since it is larger than the sum of its proper divisors (5742875).

28333285 is a wasteful number, since it uses less digits than its factorization.

28333285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12707.

The product of its digits is 34560, while the sum is 34.

The square root of 28333285 is about 5322.9019340957. The cubic root of 28333285 is about 304.8589691077.

The spelling of 28333285 in words is "twenty-eight million, three hundred thirty-three thousand, two hundred eighty-five".