28273933 has 8 divisors (see below), whose sum is σ = 28788480. Its totient is φ = 27762240.

The previous prime is 28273913. The next prime is 28273937. The reversal of 28273933 is 33937282.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28273933 - 2⁵ = 28273901 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28273892 and 28273901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28273937) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31653 + ... + 32533.

It is an arithmetic number, because the mean of its divisors is an integer number (3598560).

Almost surely, 2^28273933 is an apocalyptic number.

It is an amenable number.

28273933 is a deficient number, since it is larger than the sum of its proper divisors (514547).

28273933 is an equidigital number, since it uses as much as digits as its factorization.

28273933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1427.

The product of its digits is 54432, while the sum is 37.

The square root of 28273933 is about 5317.3238569792. The cubic root of 28273933 is about 304.6459494670.

The spelling of 28273933 in words is "twenty-eight million, two hundred seventy-three thousand, nine hundred thirty-three".