28763279 has 2 divisors, whose sum is σ = 28763280. Its totient is φ = 28763278.

The previous prime is 28763249. The next prime is 28763291. The reversal of 28763279 is 97236782.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28763279 - 2¹² = 28759183 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 (28763219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14381639 + 14381640.

It is an arithmetic number, because the mean of its divisors is an integer number (14381640).

Almost surely, 2^28763279 is an apocalyptic number.

28763279 is a deficient number, since it is larger than the sum of its proper divisors (1).

28763279 is an equidigital number, since it uses as much as digits as its factorization.

28763279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 254016, while the sum is 44.

The square root of 28763279 is about 5363.1407775668. The cubic root of 28763279 is about 306.3934413981.

The spelling of 28763279 in words is "twenty-eight million, seven hundred sixty-three thousand, two hundred seventy-nine".