240765138 has 24 divisors (see below), whose sum is σ = 524679948. Its totient is φ = 79790112.

The previous prime is 240765089. The next prime is 240765139. The reversal of 240765138 is 831567042.

240765138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 214417449 + 26347689 = 14643^2 + 5133^2 .

It is not an unprimeable number, because it can be changed into a prime (240765139) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35545 + ... + 41772.

Almost surely, 2^240765138 is an apocalyptic number.

240765138 is an abundant number, since it is smaller than the sum of its proper divisors (283914810).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

240765138 is a wasteful number, since it uses less digits than its factorization.

240765138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77498 (or 77495 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 240765138 is about 15516.6084567472. The cubic root of 240765138 is about 622.1062066413.

The spelling of 240765138 in words is "two hundred forty million, seven hundred sixty-five thousand, one hundred thirty-eight".