28072711 has 2 divisors, whose sum is σ = 28072712. Its totient is φ = 28072710.

The previous prime is 28072691. The next prime is 28072717. The reversal of 28072711 is 11727082.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28072711 - 2¹⁵ = 28039943 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28072711.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28072717) 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 as a sum of consecutive naturals, namely, 14036355 + 14036356.

It is an arithmetic number, because the mean of its divisors is an integer number (14036356).

Almost surely, 2^28072711 is an apocalyptic number.

28072711 is a deficient number, since it is larger than the sum of its proper divisors (1).

28072711 is an equidigital number, since it uses as much as digits as its factorization.

28072711 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1568, while the sum is 28.

The square root of 28072711 is about 5298.3687112167. The cubic root of 28072711 is about 303.9215193014.

Adding to 28072711 its reverse (11727082), we get a palindrome (39799793).

The spelling of 28072711 in words is "twenty-eight million, seventy-two thousand, seven hundred eleven".