28093233 has 32 divisors (see below), whose sum is σ = 44706816. Its totient is φ = 15357888.

The previous prime is 28093211. The next prime is 28093243. The reversal of 28093233 is 33239082.

It is not a de Polignac number, because 28093233 - 2¹⁴ = 28076849 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28093233.

It is not an unprimeable number, because it can be changed into a prime (28093243) 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 31 ways as a sum of consecutive naturals, for example, 47566 + ... + 48152.

It is an arithmetic number, because the mean of its divisors is an integer number (1397088).

Almost surely, 2^28093233 is an apocalyptic number.

It is an amenable number.

28093233 is a deficient number, since it is larger than the sum of its proper divisors (16613583).

28093233 is a wasteful number, since it uses less digits than its factorization.

28093233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 693.

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 28093233 is about 5300.3049912246. The cubic root of 28093233 is about 303.9955598671.

The spelling of 28093233 in words is "twenty-eight million, ninety-three thousand, two hundred thirty-three".