240989688 has 64 divisors (see below), whose sum is σ = 708804000. Its totient is φ = 75603456.

The previous prime is 240989647. The next prime is 240989701. The reversal of 240989688 is 886989042.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 29143 + ... + 36486.

Almost surely, 2^240989688 is an apocalyptic number.

It is an amenable number.

240989688 is an abundant number, since it is smaller than the sum of its proper divisors (467814312).

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

240989688 is a wasteful number, since it uses less digits than its factorization.

240989688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65661 (or 65651 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 54.

The square root of 240989688 is about 15523.8425655506. The cubic root of 240989688 is about 622.2995493372.

The spelling of 240989688 in words is "two hundred forty million, nine hundred eighty-nine thousand, six hundred eighty-eight".