28033773 has 4 divisors (see below), whose sum is σ = 37378368. Its totient is φ = 18689180.

The previous prime is 28033771. The next prime is 28033777. The reversal of 28033773 is 37733082.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28033773 - 2¹ = 28033771 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28033771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4672293 + ... + 4672298.

It is an arithmetic number, because the mean of its divisors is an integer number (9344592).

Almost surely, 2^28033773 is an apocalyptic number.

It is an amenable number.

28033773 is a deficient number, since it is larger than the sum of its proper divisors (9344595).

28033773 is an equidigital number, since it uses as much as digits as its factorization.

28033773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9344594.

The product of its (nonzero) digits is 21168, while the sum is 33.

The square root of 28033773 is about 5294.6929089419. The cubic root of 28033773 is about 303.7809370850.

The spelling of 28033773 in words is "twenty-eight million, thirty-three thousand, seven hundred seventy-three".