28024999 has 2 divisors, whose sum is σ = 28025000. Its totient is φ = 28024998.

The previous prime is 28024987. The next prime is 28025009. The reversal of 28024999 is 99942082.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28024999 - 2⁵ = 28024967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28024939) 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, 14012499 + 14012500.

It is an arithmetic number, because the mean of its divisors is an integer number (14012500).

Almost surely, 2^28024999 is an apocalyptic number.

28024999 is a deficient number, since it is larger than the sum of its proper divisors (1).

28024999 is an equidigital number, since it uses as much as digits as its factorization.

28024999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 28024999 is about 5293.8642785776. The cubic root of 28024999 is about 303.7492413626.

The spelling of 28024999 in words is "twenty-eight million, twenty-four thousand, nine hundred ninety-nine".