28358779 has 2 divisors, whose sum is σ = 28358780. Its totient is φ = 28358778.

The previous prime is 28358777. The next prime is 28358789. The reversal of 28358779 is 97785382.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28358779 - 2¹ = 28358777 is a prime.

Together with 28358777, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (28358777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14179389 + 14179390.

It is an arithmetic number, because the mean of its divisors is an integer number (14179390).

Almost surely, 2^28358779 is an apocalyptic number.

28358779 is a deficient number, since it is larger than the sum of its proper divisors (1).

28358779 is an equidigital number, since it uses as much as digits as its factorization.

28358779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 846720, while the sum is 49.

The square root of 28358779 is about 5325.2961420000. The cubic root of 28358779 is about 304.9503780241.

The spelling of 28358779 in words is "twenty-eight million, three hundred fifty-eight thousand, seven hundred seventy-nine".