240238656 has 112 divisors (see below), whose sum is σ = 807191680. Its totient is φ = 68636160.

The previous prime is 240238651. The next prime is 240238709. The reversal of 240238656 is 656832042.

It is a tau number, because it is divible by the number of its divisors (112).

It is a super-2 number, since 2×240238656² = 115429223673372672, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 240238656.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240238651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2166 + ... + 22026.

Almost surely, 2^240238656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 240238656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (403595840).

240238656 is an abundant number, since it is smaller than the sum of its proper divisors (566953024).

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

240238656 is a wasteful number, since it uses less digits than its factorization.

240238656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19889 (or 19873 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The square root of 240238656 is about 15499.6340601964. The cubic root of 240238656 is about 621.6524217503.

The spelling of 240238656 in words is "two hundred forty million, two hundred thirty-eight thousand, six hundred fifty-six".