28004719 has 2 divisors, whose sum is σ = 28004720. Its totient is φ = 28004718.

The previous prime is 28004707. The next prime is 28004737. The reversal of 28004719 is 91740082.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28004719 - 2⁷ = 28004591 is a prime.

It is a super-2 number, since 2×28004719² = 1568528572537922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28004419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14002359 + 14002360.

It is an arithmetic number, because the mean of its divisors is an integer number (14002360).

Almost surely, 2^28004719 is an apocalyptic number.

28004719 is a deficient number, since it is larger than the sum of its proper divisors (1).

28004719 is an equidigital number, since it uses as much as digits as its factorization.

28004719 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 28004719 is about 5291.9485069301. The cubic root of 28004719 is about 303.6759553523.

The spelling of 28004719 in words is "twenty-eight million, four thousand, seven hundred nineteen".