28856077 has 2 divisors, whose sum is σ = 28856078. Its totient is φ = 28856076.

The previous prime is 28856063. The next prime is 28856101. The reversal of 28856077 is 77065882.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25918281 + 2937796 = 5091^2 + 1714^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28856077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28856027) 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, 14428038 + 14428039.

It is an arithmetic number, because the mean of its divisors is an integer number (14428039).

Almost surely, 2^28856077 is an apocalyptic number.

It is an amenable number.

28856077 is a deficient number, since it is larger than the sum of its proper divisors (1).

28856077 is an equidigital number, since it uses as much as digits as its factorization.

28856077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 188160, while the sum is 43.

The square root of 28856077 is about 5371.7852712111. The cubic root of 28856077 is about 306.7225899641.

It can be divided in two parts, 288 and 56077, that added together give a palindrome (56365).

The spelling of 28856077 in words is "twenty-eight million, eight hundred fifty-six thousand, seventy-seven".