28918711 has 2 divisors, whose sum is σ = 28918712. Its totient is φ = 28918710.

The previous prime is 28918699. The next prime is 28918723. The reversal of 28918711 is 11781982.

It is a balanced prime because it is at equal distance from previous prime (28918699) and next prime (28918723).

It is a cyclic number.

It is not a de Polignac number, because 28918711 - 2¹¹ = 28916663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28918511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14459355 + 14459356.

It is an arithmetic number, because the mean of its divisors is an integer number (14459356).

Almost surely, 2^28918711 is an apocalyptic number.

28918711 is a deficient number, since it is larger than the sum of its proper divisors (1).

28918711 is an equidigital number, since it uses as much as digits as its factorization.

28918711 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8064, while the sum is 37.

The square root of 28918711 is about 5377.6120164995. The cubic root of 28918711 is about 306.9443500653.

The spelling of 28918711 in words is "twenty-eight million, nine hundred eighteen thousand, seven hundred eleven".