240388655 has 16 divisors (see below), whose sum is σ = 316522080. Its totient is φ = 174165888.

The previous prime is 240388639. The next prime is 240388657. The reversal of 240388655 is 556883042.

It is not a de Polignac number, because 240388655 - 2⁴ = 240388639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240388657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31445 + ... + 38334.

It is an arithmetic number, because the mean of its divisors is an integer number (19782630).

Almost surely, 2^240388655 is an apocalyptic number.

240388655 is a deficient number, since it is larger than the sum of its proper divisors (76133425).

240388655 is a wasteful number, since it uses less digits than its factorization.

240388655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69850.

The product of its (nonzero) digits is 230400, while the sum is 41.

The square root of 240388655 is about 15504.4720967855. The cubic root of 240388655 is about 621.7817762331.

The spelling of 240388655 in words is "two hundred forty million, three hundred eighty-eight thousand, six hundred fifty-five".