28294980073 has 2 divisors, whose sum is σ = 28294980074. Its totient is φ = 28294980072.

The previous prime is 28294979899. The next prime is 28294980079. The reversal of 28294980073 is 37008949282.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27448868329 + 846111744 = 165677^2 + 29088^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28294980073 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28294980073.

It is not a weakly prime, because it can be changed into another prime (28294980079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14147490036 + 14147490037.

It is an arithmetic number, because the mean of its divisors is an integer number (14147490037).

Almost surely, 2^28294980073 is an apocalyptic number.

It is an amenable number.

28294980073 is a deficient number, since it is larger than the sum of its proper divisors (1).

28294980073 is an equidigital number, since it uses as much as digits as its factorization.

28294980073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1741824, while the sum is 52.

The spelling of 28294980073 in words is "twenty-eight billion, two hundred ninety-four million, nine hundred eighty thousand, seventy-three".