28270334009 has 2 divisors, whose sum is σ = 28270334010. Its totient is φ = 28270334008.

The previous prime is 28270333969. The next prime is 28270334017. The reversal of 28270334009 is 90043307282.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25217440000 + 3052894009 = 158800^2 + 55253^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28270334009 is a prime.

It is not a weakly prime, because it can be changed into another prime (28270334809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14135167004 + 14135167005.

It is an arithmetic number, because the mean of its divisors is an integer number (14135167005).

Almost surely, 2^28270334009 is an apocalyptic number.

It is an amenable number.

28270334009 is a deficient number, since it is larger than the sum of its proper divisors (1).

28270334009 is an equidigital number, since it uses as much as digits as its factorization.

28270334009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 38.

The spelling of 28270334009 in words is "twenty-eight billion, two hundred seventy million, three hundred thirty-four thousand, nine".