28233011 has 2 divisors, whose sum is σ = 28233012. Its totient is φ = 28233010.

The previous prime is 28232987. The next prime is 28233017. The reversal of 28233011 is 11033282.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28233011 - 2¹⁴ = 28216627 is a prime.

It is a super-2 number, since 2×28233011² = 1594205820252242, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28233017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14116505 + 14116506.

It is an arithmetic number, because the mean of its divisors is an integer number (14116506).

Almost surely, 2^28233011 is an apocalyptic number.

28233011 is a deficient number, since it is larger than the sum of its proper divisors (1).

28233011 is an equidigital number, since it uses as much as digits as its factorization.

28233011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 28233011 is about 5313.4744753316. The cubic root of 28233011 is about 304.4989030584.

Adding to 28233011 its reverse (11033282), we get a palindrome (39266293).

The spelling of 28233011 in words is "twenty-eight million, two hundred thirty-three thousand, eleven".