240505263 has 12 divisors (see below), whose sum is σ = 347590360. Its totient is φ = 160247376.

The previous prime is 240505259. The next prime is 240505271. The reversal of 240505263 is 362505042.

It is not a de Polignac number, because 240505263 - 2² = 240505259 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240505253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12333 + ... + 25161.

Almost surely, 2^240505263 is an apocalyptic number.

240505263 is a deficient number, since it is larger than the sum of its proper divisors (107085097).

240505263 is a wasteful number, since it uses less digits than its factorization.

240505263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14918 (or 14915 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 240505263 is about 15508.2321042729. The cubic root of 240505263 is about 621.8822981829.

The spelling of 240505263 in words is "two hundred forty million, five hundred five thousand, two hundred sixty-three".