240689051 has 8 divisors (see below), whose sum is σ = 242965008. Its totient is φ = 238420000.

The previous prime is 240689047. The next prime is 240689069. The reversal of 240689051 is 150986042.

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

It is not a de Polignac number, because 240689051 - 2² = 240689047 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (240689011) 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 7 ways as a sum of consecutive naturals, for example, 90521 + ... + 93141.

It is an arithmetic number, because the mean of its divisors is an integer number (30370626).

Almost surely, 2^240689051 is an apocalyptic number.

240689051 is a deficient number, since it is larger than the sum of its proper divisors (2275957).

240689051 is a wasteful number, since it uses less digits than its factorization.

240689051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3453.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 240689051 is about 15514.1564707850. The cubic root of 240689051 is about 622.0406667235.

The spelling of 240689051 in words is "two hundred forty million, six hundred eighty-nine thousand, fifty-one".