240640264 has 8 divisors (see below), whose sum is σ = 451200510. Its totient is φ = 120320128.

The previous prime is 240640249. The next prime is 240640271. The reversal of 240640264 is 462046042.

It can be written as a sum of positive squares in only one way, i.e., 159820164 + 80820100 = 12642^2 + 8990^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 15040009 + ... + 15040024.

Almost surely, 2^240640264 is an apocalyptic number.

It is an amenable number.

240640264 is a deficient number, since it is larger than the sum of its proper divisors (210560246).

240640264 is a wasteful number, since it uses less digits than its factorization.

240640264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30080039 (or 30080035 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

The square root of 240640264 is about 15512.5840529552. The cubic root of 240640264 is about 621.9986352468.

The spelling of 240640264 in words is "two hundred forty million, six hundred forty thousand, two hundred sixty-four".