28407859 has 2 divisors, whose sum is σ = 28407860. Its totient is φ = 28407858.

The previous prime is 28407857. The next prime is 28407887. The reversal of 28407859 is 95870482.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28407859 - 2¹ = 28407857 is a prime.

Together with 28407857, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (28407857) 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, 14203929 + 14203930.

It is an arithmetic number, because the mean of its divisors is an integer number (14203930).

Almost surely, 2^28407859 is an apocalyptic number.

28407859 is a deficient number, since it is larger than the sum of its proper divisors (1).

28407859 is an equidigital number, since it uses as much as digits as its factorization.

28407859 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 161280, while the sum is 43.

The square root of 28407859 is about 5329.9023443211. The cubic root of 28407859 is about 305.1262005739.

The spelling of 28407859 in words is "twenty-eight million, four hundred seven thousand, eight hundred fifty-nine".