28386451 has 2 divisors, whose sum is σ = 28386452. Its totient is φ = 28386450.

The previous prime is 28386443. The next prime is 28386469. The reversal of 28386451 is 15468382.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28386451 - 2³ = 28386443 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28386451.

It is not a weakly prime, because it can be changed into another prime (28386401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14193225 + 14193226.

It is an arithmetic number, because the mean of its divisors is an integer number (14193226).

Almost surely, 2^28386451 is an apocalyptic number.

28386451 is a deficient number, since it is larger than the sum of its proper divisors (1).

28386451 is an equidigital number, since it uses as much as digits as its factorization.

28386451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46080, while the sum is 37.

The square root of 28386451 is about 5327.8936738640. The cubic root of 28386451 is about 305.0495341926.

The spelling of 28386451 in words is "twenty-eight million, three hundred eighty-six thousand, four hundred fifty-one".