28273711 has 2 divisors, whose sum is σ = 28273712. Its totient is φ = 28273710.

The previous prime is 28273709. The next prime is 28273727. The reversal of 28273711 is 11737282.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28273711 - 2¹ = 28273709 is a prime.

Together with 28273709, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28273111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14136855 + 14136856.

It is an arithmetic number, because the mean of its divisors is an integer number (14136856).

Almost surely, 2^28273711 is an apocalyptic number.

28273711 is a deficient number, since it is larger than the sum of its proper divisors (1).

28273711 is an equidigital number, since it uses as much as digits as its factorization.

28273711 is an evil number, because the sum of its binary digits is even.

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

The square root of 28273711 is about 5317.3029817756. The cubic root of 28273711 is about 304.6451521298.

The spelling of 28273711 in words is "twenty-eight million, two hundred seventy-three thousand, seven hundred eleven".