28533817 has 8 divisors (see below), whose sum is σ = 30798656. Its totient is φ = 26278992.

The previous prime is 28533809. The next prime is 28533829. The reversal of 28533817 is 71833582.

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 28533817 - 2³ = 28533809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28533017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4078 + ... + 8584.

It is an arithmetic number, because the mean of its divisors is an integer number (3849832).

Almost surely, 2^28533817 is an apocalyptic number.

It is an amenable number.

28533817 is a deficient number, since it is larger than the sum of its proper divisors (2264839).

28533817 is a wasteful number, since it uses less digits than its factorization.

28533817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5007.

The product of its digits is 40320, while the sum is 37.

The square root of 28533817 is about 5341.7054392769. The cubic root of 28533817 is about 305.5765034576.

It can be divided in two parts, 2853 and 3817, that added together give a triangular number (6670 = T₁₁₅).

The spelling of 28533817 in words is "twenty-eight million, five hundred thirty-three thousand, eight hundred seventeen".