28824487 has 2 divisors, whose sum is σ = 28824488. Its totient is φ = 28824486.

The previous prime is 28824457. The next prime is 28824529. The reversal of 28824487 is 78442882.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28824487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28824407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14412243 + 14412244.

It is an arithmetic number, because the mean of its divisors is an integer number (14412244).

Almost surely, 2^28824487 is an apocalyptic number.

28824487 is a deficient number, since it is larger than the sum of its proper divisors (1).

28824487 is an equidigital number, since it uses as much as digits as its factorization.

28824487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 229376, while the sum is 43.

The square root of 28824487 is about 5368.8441027841. The cubic root of 28824487 is about 306.6106215844.

The spelling of 28824487 in words is "twenty-eight million, eight hundred twenty-four thousand, four hundred eighty-seven".