28323151 has 2 divisors, whose sum is σ = 28323152. Its totient is φ = 28323150.

The previous prime is 28323149. The next prime is 28323157. The reversal of 28323151 is 15132382.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28323151 - 2¹ = 28323149 is a prime.

Together with 28323149, it forms a pair of twin primes.

It is equal to p_1760344 and since 28323151 and 1760344 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28323157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14161575 + 14161576.

It is an arithmetic number, because the mean of its divisors is an integer number (14161576).

Almost surely, 2^28323151 is an apocalyptic number.

28323151 is a deficient number, since it is larger than the sum of its proper divisors (1).

28323151 is an equidigital number, since it uses as much as digits as its factorization.

28323151 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1440, while the sum is 25.

The square root of 28323151 is about 5321.9499246047. The cubic root of 28323151 is about 304.8226183492.

The spelling of 28323151 in words is "twenty-eight million, three hundred twenty-three thousand, one hundred fifty-one".