240638273 has 2 divisors, whose sum is σ = 240638274. Its totient is φ = 240638272.

The previous prime is 240638267. The next prime is 240638309. The reversal of 240638273 is 372836042.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 240622144 + 16129 = 15512^2 + 127^2 .

It is a cyclic number.

It is not a de Polignac number, because 240638273 - 2⁸ = 240638017 is a prime.

It is not a weakly prime, because it can be changed into another prime (240638873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120319136 + 120319137.

It is an arithmetic number, because the mean of its divisors is an integer number (120319137).

Almost surely, 2^240638273 is an apocalyptic number.

It is an amenable number.

240638273 is a deficient number, since it is larger than the sum of its proper divisors (1).

240638273 is an equidigital number, since it uses as much as digits as its factorization.

240638273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 35.

The square root of 240638273 is about 15512.5198791170. The cubic root of 240638273 is about 621.9969198195.

The spelling of 240638273 in words is "two hundred forty million, six hundred thirty-eight thousand, two hundred seventy-three".