28316957 has 2 divisors, whose sum is σ = 28316958. Its totient is φ = 28316956.

The previous prime is 28316929. The next prime is 28316969. The reversal of 28316957 is 75961382.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28026436 + 290521 = 5294^2 + 539^2 .

It is a cyclic number.

It is not a de Polignac number, because 28316957 - 2¹⁰ = 28315933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28316987) 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, 14158478 + 14158479.

It is an arithmetic number, because the mean of its divisors is an integer number (14158479).

Almost surely, 2^28316957 is an apocalyptic number.

It is an amenable number.

28316957 is a deficient number, since it is larger than the sum of its proper divisors (1).

28316957 is an equidigital number, since it uses as much as digits as its factorization.

28316957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 41.

The square root of 28316957 is about 5321.3679632215. The cubic root of 28316957 is about 304.8003961401.

The spelling of 28316957 in words is "twenty-eight million, three hundred sixteen thousand, nine hundred fifty-seven".