28716611 has 8 divisors (see below), whose sum is σ = 35802624. Its totient is φ = 22376520.

The previous prime is 28716601. The next prime is 28716613. The reversal of 28716611 is 11661782.

It is a happy number.

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 28716611 - 2¹⁰ = 28715587 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28716613) 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, 186395 + ... + 186548.

It is an arithmetic number, because the mean of its divisors is an integer number (4475328).

Almost surely, 2^28716611 is an apocalyptic number.

28716611 is a deficient number, since it is larger than the sum of its proper divisors (7086013).

28716611 is a wasteful number, since it uses less digits than its factorization.

28716611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372961.

The product of its digits is 4032, while the sum is 32.

The square root of 28716611 is about 5358.7882025697. The cubic root of 28716611 is about 306.2276454042.

The spelling of 28716611 in words is "twenty-eight million, seven hundred sixteen thousand, six hundred eleven".