28325357 has 2 divisors, whose sum is σ = 28325358. Its totient is φ = 28325356.

The previous prime is 28325329. The next prime is 28325359. The reversal of 28325357 is 75352382.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28185481 + 139876 = 5309^2 + 374^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28325357 is a prime.

Together with 28325359, 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 (28325359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14162678 + 14162679.

It is an arithmetic number, because the mean of its divisors is an integer number (14162679).

Almost surely, 2^28325357 is an apocalyptic number.

It is an amenable number.

28325357 is a deficient number, since it is larger than the sum of its proper divisors (1).

28325357 is an equidigital number, since it uses as much as digits as its factorization.

28325357 is an evil number, because the sum of its binary digits is even.

The product of its digits is 50400, while the sum is 35.

The square root of 28325357 is about 5322.1571754318. The cubic root of 28325357 is about 304.8305320313.

It can be divided in two parts, 28325 and 357, that added together give a palindrome (28682).

The spelling of 28325357 in words is "twenty-eight million, three hundred twenty-five thousand, three hundred fifty-seven".