28711327 has 4 divisors (see below), whose sum is σ = 28815256. Its totient is φ = 28607400.

The previous prime is 28711307. The next prime is 28711339. The reversal of 28711327 is 72311782.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28711327 - 2¹⁹ = 28187039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28711307) 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, 51549 + ... + 52102.

It is an arithmetic number, because the mean of its divisors is an integer number (7203814).

Almost surely, 2^28711327 is an apocalyptic number.

28711327 is a deficient number, since it is larger than the sum of its proper divisors (103929).

28711327 is a wasteful number, since it uses less digits than its factorization.

28711327 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103928.

The product of its digits is 4704, while the sum is 31.

The square root of 28711327 is about 5358.2951579770. The cubic root of 28711327 is about 306.2088617795.

The spelling of 28711327 in words is "twenty-eight million, seven hundred eleven thousand, three hundred twenty-seven".