28069233 has 8 divisors (see below), whose sum is σ = 37594368. Its totient is φ = 18628464.

The previous prime is 28069183. The next prime is 28069259. The reversal of 28069233 is 33296082.

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

It is not a de Polignac number, because 28069233 - 2⁹ = 28068721 is a prime.

It is a super-3 number, since 3×28069233³ (a number of 23 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28069194 and 28069203.

It is not an unprimeable number, because it can be changed into a prime (28069633) 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 in 7 ways as a sum of consecutive naturals, for example, 20310 + ... + 21647.

It is an arithmetic number, because the mean of its divisors is an integer number (4699296).

Almost surely, 2^28069233 is an apocalyptic number.

It is an amenable number.

28069233 is a deficient number, since it is larger than the sum of its proper divisors (9525135).

28069233 is a wasteful number, since it uses less digits than its factorization.

28069233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42183.

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 28069233 is about 5298.0404868215. The cubic root of 28069233 is about 303.9089675781.

The spelling of 28069233 in words is "twenty-eight million, sixty-nine thousand, two hundred thirty-three".