28322071 has 2 divisors, whose sum is σ = 28322072. Its totient is φ = 28322070.

The previous prime is 28322011. The next prime is 28322083. The reversal of 28322071 is 17022382.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28322071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28322011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14161035 + 14161036.

It is an arithmetic number, because the mean of its divisors is an integer number (14161036).

Almost surely, 2^28322071 is an apocalyptic number.

28322071 is a deficient number, since it is larger than the sum of its proper divisors (1).

28322071 is an equidigital number, since it uses as much as digits as its factorization.

28322071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 28322071 is about 5321.8484570683. The cubic root of 28322071 is about 304.8187438672.

The spelling of 28322071 in words is "twenty-eight million, three hundred twenty-two thousand, seventy-one".