240286387 has 4 divisors (see below), whose sum is σ = 262130616. Its totient is φ = 218442160.

The previous prime is 240286349. The next prime is 240286393. The reversal of 240286387 is 783682042.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 240286387 - 2¹⁵ = 240253619 is a prime.

It is not an unprimeable number, because it can be changed into a prime (240286307) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10922098 + ... + 10922119.

It is an arithmetic number, because the mean of its divisors is an integer number (65532654).

Almost surely, 2^240286387 is an apocalyptic number.

240286387 is a deficient number, since it is larger than the sum of its proper divisors (21844229).

240286387 is a wasteful number, since it uses less digits than its factorization.

240286387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21844228.

The product of its (nonzero) digits is 129024, while the sum is 40.

The square root of 240286387 is about 15501.1737297535. The cubic root of 240286387 is about 621.6935893228.

The spelling of 240286387 in words is "two hundred forty million, two hundred eighty-six thousand, three hundred eighty-seven".