28782827 has 2 divisors, whose sum is σ = 28782828. Its totient is φ = 28782826.

The previous prime is 28782811. The next prime is 28782829. The reversal of 28782827 is 72828782.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28782827 - 2⁴ = 28782811 is a prime.

It is a super-2 number, since 2×28782827² = 1656902260223858, which contains 22 as substring.

Together with 28782829, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28782829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14391413 + 14391414.

It is an arithmetic number, because the mean of its divisors is an integer number (14391414).

Almost surely, 2^28782827 is an apocalyptic number.

28782827 is a deficient number, since it is larger than the sum of its proper divisors (1).

28782827 is an equidigital number, since it uses as much as digits as its factorization.

28782827 is an odious number, because the sum of its binary digits is odd.

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

The square root of 28782827 is about 5364.9629076071. The cubic root of 28782827 is about 306.4628356962.

The spelling of 28782827 in words is "twenty-eight million, seven hundred eighty-two thousand, eight hundred twenty-seven".