28533122 has 4 divisors (see below), whose sum is σ = 42799686. Its totient is φ = 14266560.

The previous prime is 28533121. The next prime is 28533173. The reversal of 28533122 is 22133582.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22133582 = 2 ⋅11066791.

It can be written as a sum of positive squares in only one way, i.e., 19175641 + 9357481 = 4379^2 + 3059^2 .

It is a junction number, because it is equal to n+sod(n) for n = 28533091 and 28533100.

It is not an unprimeable number, because it can be changed into a prime (28533121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7133279 + ... + 7133282.

Almost surely, 2^28533122 is an apocalyptic number.

28533122 is a deficient number, since it is larger than the sum of its proper divisors (14266564).

28533122 is a wasteful number, since it uses less digits than its factorization.

28533122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14266563.

The product of its digits is 2880, while the sum is 26.

The square root of 28533122 is about 5341.6403847507. The cubic root of 28533122 is about 305.5740224554.

The spelling of 28533122 in words is "twenty-eight million, five hundred thirty-three thousand, one hundred twenty-two".