28086233 has 8 divisors (see below), whose sum is σ = 32333952. Its totient is φ = 23897376.

The previous prime is 28086229. The next prime is 28086241. The reversal of 28086233 is 33268082.

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 28086233 - 2² = 28086229 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28086233.

It is not an unprimeable number, because it can be changed into a prime (28086203) 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, 13685 + ... + 15602.

It is an arithmetic number, because the mean of its divisors is an integer number (4041744).

Almost surely, 2^28086233 is an apocalyptic number.

It is an amenable number.

28086233 is a deficient number, since it is larger than the sum of its proper divisors (4247719).

28086233 is a wasteful number, since it uses less digits than its factorization.

28086233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29431.

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

The square root of 28086233 is about 5299.6446107263. The cubic root of 28086233 is about 303.9703088788.

The spelling of 28086233 in words is "twenty-eight million, eighty-six thousand, two hundred thirty-three".