28286851 has 2 divisors, whose sum is σ = 28286852. Its totient is φ = 28286850.

The previous prime is 28286831. The next prime is 28286873. The reversal of 28286851 is 15868282.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28286851 is a prime.

It is not a weakly prime, because it can be changed into another prime (28286821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14143425 + 14143426.

It is an arithmetic number, because the mean of its divisors is an integer number (14143426).

Almost surely, 2^28286851 is an apocalyptic number.

28286851 is a deficient number, since it is larger than the sum of its proper divisors (1).

28286851 is an equidigital number, since it uses as much as digits as its factorization.

28286851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 61440, while the sum is 40.

The square root of 28286851 is about 5318.5384270493. The cubic root of 28286851 is about 304.6923386880.

The spelling of 28286851 in words is "twenty-eight million, two hundred eighty-six thousand, eight hundred fifty-one".