28236463273 has 2 divisors, whose sum is σ = 28236463274. Its totient is φ = 28236463272.

The previous prime is 28236463231. The next prime is 28236463319. The reversal of 28236463273 is 37236463282.

It is an a-pointer prime, because the next prime (28236463319) can be obtained adding 28236463273 to its sum of digits (46).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25963843689 + 2272619584 = 161133^2 + 47672^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28236463273 is a prime.

It is not a weakly prime, because it can be changed into another prime (28236463573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14118231636 + 14118231637.

It is an arithmetic number, because the mean of its divisors is an integer number (14118231637).

Almost surely, 2^28236463273 is an apocalyptic number.

It is an amenable number.

28236463273 is a deficient number, since it is larger than the sum of its proper divisors (1).

28236463273 is an equidigital number, since it uses as much as digits as its factorization.

28236463273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1741824, while the sum is 46.

Subtracting 28236463273 from its reverse (37236463282), we obtain a palindrome (9000000009).

The spelling of 28236463273 in words is "twenty-eight billion, two hundred thirty-six million, four hundred sixty-three thousand, two hundred seventy-three".