28275979 has 2 divisors, whose sum is σ = 28275980. Its totient is φ = 28275978.

The previous prime is 28275967. The next prime is 28275991. The reversal of 28275979 is 97957282.

It is a balanced prime because it is at equal distance from previous prime (28275967) and next prime (28275991).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28275979 is a prime.

It is not a weakly prime, because it can be changed into another prime (28275179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14137989 + 14137990.

It is an arithmetic number, because the mean of its divisors is an integer number (14137990).

Almost surely, 2^28275979 is an apocalyptic number.

28275979 is a deficient number, since it is larger than the sum of its proper divisors (1).

28275979 is an equidigital number, since it uses as much as digits as its factorization.

28275979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 635040, while the sum is 49.

The square root of 28275979 is about 5317.5162435107. The cubic root of 28275979 is about 304.6532977028.

The spelling of 28275979 in words is "twenty-eight million, two hundred seventy-five thousand, nine hundred seventy-nine".