27280073 has 2 divisors, whose sum is σ = 27280074. Its totient is φ = 27280072.

The previous prime is 27280049. The next prime is 27280079. The reversal of 27280073 is 37008272.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20457529 + 6822544 = 4523^2 + 2612^2 .

It is a cyclic number.

It is not a de Polignac number, because 27280073 - 2¹² = 27275977 is a prime.

It is not a weakly prime, because it can be changed into another prime (27280079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13640036 + 13640037.

It is an arithmetic number, because the mean of its divisors is an integer number (13640037).

Almost surely, 2^27280073 is an apocalyptic number.

It is an amenable number.

27280073 is a deficient number, since it is larger than the sum of its proper divisors (1).

27280073 is an equidigital number, since it uses as much as digits as its factorization.

27280073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 27280073 is about 5223.0329311617. The cubic root of 27280073 is about 301.0337412461.

The spelling of 27280073 in words is "twenty-seven million, two hundred eighty thousand, seventy-three".