28302312469 has 2 divisors, whose sum is σ = 28302312470. Its totient is φ = 28302312468.

The previous prime is 28302312397. The next prime is 28302312523. The reversal of 28302312469 is 96421320382.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28194775569 + 107536900 = 167913^2 + 10370^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28302312469 is a prime.

It is a super-2 number, since 2×28302312469² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28302312869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14151156234 + 14151156235.

It is an arithmetic number, because the mean of its divisors is an integer number (14151156235).

Almost surely, 2^28302312469 is an apocalyptic number.

It is an amenable number.

28302312469 is a deficient number, since it is larger than the sum of its proper divisors (1).

28302312469 is an equidigital number, since it uses as much as digits as its factorization.

28302312469 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 40.

The spelling of 28302312469 in words is "twenty-eight billion, three hundred two million, three hundred twelve thousand, four hundred sixty-nine".