28888271 has 2 divisors, whose sum is σ = 28888272. Its totient is φ = 28888270.

The previous prime is 28888261. The next prime is 28888283. The reversal of 28888271 is 17288882.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28888271 - 2²² = 24693967 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28888201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14444135 + 14444136.

It is an arithmetic number, because the mean of its divisors is an integer number (14444136).

Almost surely, 2^28888271 is an apocalyptic number.

28888271 is a deficient number, since it is larger than the sum of its proper divisors (1).

28888271 is an equidigital number, since it uses as much as digits as its factorization.

28888271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 114688, while the sum is 44.

The square root of 28888271 is about 5374.7810187951. The cubic root of 28888271 is about 306.8366151316.

The spelling of 28888271 in words is "twenty-eight million, eight hundred eighty-eight thousand, two hundred seventy-one".