28794233 has 4 divisors (see below), whose sum is σ = 31009188. Its totient is φ = 26579280.

The previous prime is 28794223. The next prime is 28794239. The reversal of 28794233 is 33249782.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 33249782 = 2 ⋅16624891.

It can be written as a sum of positive squares in 2 ways, for example, as 7661824 + 21132409 = 2768^2 + 4597^2 .

It is not a de Polignac number, because 28794233 - 2⁴ = 28794217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28794239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1107458 + ... + 1107483.

It is an arithmetic number, because the mean of its divisors is an integer number (7752297).

Almost surely, 2^28794233 is an apocalyptic number.

It is an amenable number.

28794233 is a deficient number, since it is larger than the sum of its proper divisors (2214955).

28794233 is a wasteful number, since it uses less digits than its factorization.

28794233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2214954.

The product of its digits is 72576, while the sum is 38.

The square root of 28794233 is about 5366.0258105976. The cubic root of 28794233 is about 306.5033118393.

The spelling of 28794233 in words is "twenty-eight million, seven hundred ninety-four thousand, two hundred thirty-three".