28795831 has 2 divisors, whose sum is σ = 28795832. Its totient is φ = 28795830.

The previous prime is 28795787. The next prime is 28795847. The reversal of 28795831 is 13859782.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28795831 is a prime.

It is a super-2 number, since 2×28795831² = 1658399765961122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28795891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14397915 + 14397916.

It is an arithmetic number, because the mean of its divisors is an integer number (14397916).

Almost surely, 2^28795831 is an apocalyptic number.

28795831 is a deficient number, since it is larger than the sum of its proper divisors (1).

28795831 is an equidigital number, since it uses as much as digits as its factorization.

28795831 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 43.

The square root of 28795831 is about 5366.1747083001. The cubic root of 28795831 is about 306.5089817621.

The spelling of 28795831 in words is "twenty-eight million, seven hundred ninety-five thousand, eight hundred thirty-one".