240815855 has 16 divisors (see below), whose sum is σ = 341651520. Its totient is φ = 159436032.

The previous prime is 240815851. The next prime is 240815879. The reversal of 240815855 is 558518042.

It is not a de Polignac number, because 240815855 - 2² = 240815851 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240815851) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117614 + ... + 119643.

It is an arithmetic number, because the mean of its divisors is an integer number (21353220).

Almost surely, 2^240815855 is an apocalyptic number.

240815855 is a deficient number, since it is larger than the sum of its proper divisors (100835665).

240815855 is a wasteful number, since it uses less digits than its factorization.

240815855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237298.

The product of its (nonzero) digits is 64000, while the sum is 38.

The square root of 240815855 is about 15518.2426517953. The cubic root of 240815855 is about 622.1498856467.

The spelling of 240815855 in words is "two hundred forty million, eight hundred fifteen thousand, eight hundred fifty-five".