240644938 has 8 divisors (see below), whose sum is σ = 365912388. Its totient is φ = 118674144.

The previous prime is 240644933. The next prime is 240644941. The reversal of 240644938 is 839446042.

It can be written as a sum of positive squares in 2 ways, for example, as 223113969 + 17530969 = 14937^2 + 4187^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 240644938.

It is not an unprimeable number, because it can be changed into a prime (240644933) 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 3 ways as a sum of consecutive naturals, for example, 823981 + ... + 824272.

Almost surely, 2^240644938 is an apocalyptic number.

240644938 is a deficient number, since it is larger than the sum of its proper divisors (125267450).

240644938 is a wasteful number, since it uses less digits than its factorization.

240644938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1648328.

The product of its (nonzero) digits is 165888, while the sum is 40.

The square root of 240644938 is about 15512.7347041068. The cubic root of 240644938 is about 622.0026622853.

The spelling of 240644938 in words is "two hundred forty million, six hundred forty-four thousand, nine hundred thirty-eight".