28301951 has 2 divisors, whose sum is σ = 28301952. Its totient is φ = 28301950.

The previous prime is 28301893. The next prime is 28301953. The reversal of 28301951 is 15910382.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28301951 - 2¹⁰ = 28300927 is a prime.

Together with 28301953, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28301953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14150975 + 14150976.

It is an arithmetic number, because the mean of its divisors is an integer number (14150976).

Almost surely, 2^28301951 is an apocalyptic number.

28301951 is a deficient number, since it is larger than the sum of its proper divisors (1).

28301951 is an equidigital number, since it uses as much as digits as its factorization.

28301951 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 28301951 is about 5319.9578005845. The cubic root of 28301951 is about 304.7465456867.

The spelling of 28301951 in words is "twenty-eight million, three hundred one thousand, nine hundred fifty-one".