2780273 has 2 divisors, whose sum is σ = 2780274.
Its totient is φ = 2780272.
The previous prime is 2780243. The next prime is 2780303. The reversal of 2780273 is 3720872.
2780273 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a balanced prime because it is at equal distance from previous prime (2780243) and next prime (2780303).
It can be written as a sum of positive squares in only one way, i.e., 2380849 + 399424 = 1543^2 + 632^2
It is a cyclic number.
It is not a de Polignac number, because 2780273 - 26 = 2780209 is a prime.
It is not a weakly prime, because it can be changed into another prime (2780203) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1390136 + 1390137.
It is an arithmetic number, because the mean of its divisors is an integer number (1390137).
22780273 is an apocalyptic number.
It is an amenable number.
2780273 is a deficient number, since it is larger than the sum of its proper divisors (1).
2780273 is an equidigital number, since it uses as much as digits as its factorization.
2780273 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 2780273 is about 1667.4150653032.
The cubic root of 2780273 is about 140.6141893253.
The spelling of 2780273 in words is "two million, seven hundred eighty thousand, two hundred seventy-three".