28272433 has 8 divisors (see below), whose sum is σ = 32447360. Its totient is φ = 24131520.

The previous prime is 28272401. The next prime is 28272443. The reversal of 28272433 is 33427282.

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

It is not a de Polignac number, because 28272433 - 2⁵ = 28272401 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28272395 and 28272404.

It is not an unprimeable number, because it can be changed into a prime (28272443) 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, 6693 + ... + 10066.

It is an arithmetic number, because the mean of its divisors is an integer number (4055920).

Almost surely, 2^28272433 is an apocalyptic number.

It is an amenable number.

28272433 is a deficient number, since it is larger than the sum of its proper divisors (4174927).

28272433 is a wasteful number, since it uses less digits than its factorization.

28272433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17007.

The product of its digits is 16128, while the sum is 31.

The square root of 28272433 is about 5317.1828067126. The cubic root of 28272433 is about 304.6405619721.

The spelling of 28272433 in words is "twenty-eight million, two hundred seventy-two thousand, four hundred thirty-three".