28882277 has 2 divisors, whose sum is σ = 28882278. Its totient is φ = 28882276.

The previous prime is 28882267. The next prime is 28882279. The reversal of 28882277 is 77228882.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28879876 + 2401 = 5374^2 + 49^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28882277 is a prime.

Together with 28882279, 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 (28882279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14441138 + 14441139.

It is an arithmetic number, because the mean of its divisors is an integer number (14441139).

Almost surely, 2^28882277 is an apocalyptic number.

It is an amenable number.

28882277 is a deficient number, since it is larger than the sum of its proper divisors (1).

28882277 is an equidigital number, since it uses as much as digits as its factorization.

28882277 is an evil number, because the sum of its binary digits is even.

The product of its digits is 200704, while the sum is 44.

The square root of 28882277 is about 5374.2233857554. The cubic root of 28882277 is about 306.8153919174.

The spelling of 28882277 in words is "twenty-eight million, eight hundred eighty-two thousand, two hundred seventy-seven".