28868419 has 2 divisors, whose sum is σ = 28868420. Its totient is φ = 28868418.

The previous prime is 28868407. The next prime is 28868423. The reversal of 28868419 is 91486882.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28868419 - 2¹¹ = 28866371 is a prime.

It is a super-2 number, since 2×28868419² = 1666771231119122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28868459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14434209 + 14434210.

It is an arithmetic number, because the mean of its divisors is an integer number (14434210).

Almost surely, 2^28868419 is an apocalyptic number.

28868419 is a deficient number, since it is larger than the sum of its proper divisors (1).

28868419 is an equidigital number, since it uses as much as digits as its factorization.

28868419 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 221184, while the sum is 46.

The square root of 28868419 is about 5372.9339284975. The cubic root of 28868419 is about 306.7663130549.

The spelling of 28868419 in words is "twenty-eight million, eight hundred sixty-eight thousand, four hundred nineteen".