28622723 has 2 divisors, whose sum is σ = 28622724. Its totient is φ = 28622722.

The previous prime is 28622701. The next prime is 28622731. The reversal of 28622723 is 32722682.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28622723 - 2¹⁰ = 28621699 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28622723.

It is not a weakly prime, because it can be changed into another prime (28622743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14311361 + 14311362.

It is an arithmetic number, because the mean of its divisors is an integer number (14311362).

Almost surely, 2^28622723 is an apocalyptic number.

28622723 is a deficient number, since it is larger than the sum of its proper divisors (1).

28622723 is an equidigital number, since it uses as much as digits as its factorization.

28622723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16128, while the sum is 32.

The square root of 28622723 is about 5350.0208410809. The cubic root of 28622723 is about 305.8935473474.

The spelling of 28622723 in words is "twenty-eight million, six hundred twenty-two thousand, seven hundred twenty-three".