28005834419 has 2 divisors, whose sum is σ = 28005834420. Its totient is φ = 28005834418.

The previous prime is 28005834401. The next prime is 28005834421. The reversal of 28005834419 is 91443850082.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28005834419 is a prime.

It is a super-2 number, since 2×28005834419² (a number of 22 digits) contains 22 as substring.

Together with 28005834421, it forms a pair of twin primes.

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 28005834419.

It is not a weakly prime, because it can be changed into another prime (28005804419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14002917209 + 14002917210.

It is an arithmetic number, because the mean of its divisors is an integer number (14002917210).

Almost surely, 2^28005834419 is an apocalyptic number.

28005834419 is a deficient number, since it is larger than the sum of its proper divisors (1).

28005834419 is an equidigital number, since it uses as much as digits as its factorization.

28005834419 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 276480, while the sum is 44.

The spelling of 28005834419 in words is "twenty-eight billion, five million, eight hundred thirty-four thousand, four hundred nineteen".