288278273 has 2 divisors, whose sum is σ = 288278274. Its totient is φ = 288278272.

The previous prime is 288278267. The next prime is 288278293. The reversal of 288278273 is 372872882.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 176172529 + 112105744 = 13273^2 + 10588^2 .

It is a cyclic number.

It is not a de Polignac number, because 288278273 - 2¹⁶ = 288212737 is a prime.

It is not a weakly prime, because it can be changed into another prime (288278293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144139136 + 144139137.

It is an arithmetic number, because the mean of its divisors is an integer number (144139137).

Almost surely, 2^288278273 is an apocalyptic number.

It is an amenable number.

288278273 is a deficient number, since it is larger than the sum of its proper divisors (1).

288278273 is an equidigital number, since it uses as much as digits as its factorization.

288278273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 602112, while the sum is 47.

The square root of 288278273 is about 16978.7594658738. The cubic root of 288278273 is about 660.5980751089.

The spelling of 288278273 in words is "two hundred eighty-eight million, two hundred seventy-eight thousand, two hundred seventy-three".