240009644 has 36 divisors (see below), whose sum is σ = 491392440. Its totient is φ = 102271680.

The previous prime is 240009643. The next prime is 240009701. The reversal of 240009644 is 446900042.

240009644 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (240009643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31664 + ... + 38504.

It is an arithmetic number, because the mean of its divisors is an integer number (13649790).

Almost surely, 2^240009644 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 240009644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (245696220).

240009644 is an abundant number, since it is smaller than the sum of its proper divisors (251382796).

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

240009644 is a wasteful number, since it uses less digits than its factorization.

240009644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7038 (or 7029 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 240009644 is about 15492.2446404645. The cubic root of 240009644 is about 621.4548250099.

Adding to 240009644 its reverse (446900042), we get a palindrome (686909686).

The spelling of 240009644 in words is "two hundred forty million, nine thousand, six hundred forty-four".