28875349 has 2 divisors, whose sum is σ = 28875350. Its totient is φ = 28875348.

The previous prime is 28875347. The next prime is 28875361. The reversal of 28875349 is 94357882.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25100100 + 3775249 = 5010^2 + 1943^2 .

It is a cyclic number.

It is not a de Polignac number, because 28875349 - 2¹ = 28875347 is a prime.

Together with 28875347, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 28875299 and 28875308.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28875347) 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, 14437674 + 14437675.

It is an arithmetic number, because the mean of its divisors is an integer number (14437675).

Almost surely, 2^28875349 is an apocalyptic number.

It is an amenable number.

28875349 is a deficient number, since it is larger than the sum of its proper divisors (1).

28875349 is an equidigital number, since it uses as much as digits as its factorization.

28875349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 483840, while the sum is 46.

The square root of 28875349 is about 5373.5787888520. The cubic root of 28875349 is about 306.7908579906.

The spelling of 28875349 in words is "twenty-eight million, eight hundred seventy-five thousand, three hundred forty-nine".