240440436 has 72 divisors (see below), whose sum is σ = 646289280. Its totient is φ = 75201984.

The previous prime is 240440429. The next prime is 240440461. The reversal of 240440436 is 634044042.

240440436 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41145 + ... + 46623.

It is an arithmetic number, because the mean of its divisors is an integer number (8976240).

Almost surely, 2^240440436 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 240440436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (323144640).

240440436 is an abundant number, since it is smaller than the sum of its proper divisors (405848844).

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

240440436 is a wasteful number, since it uses less digits than its factorization.

240440436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5565 (or 5560 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

The square root of 240440436 is about 15506.1418799133. The cubic root of 240440436 is about 621.8264180662.

Adding to 240440436 its reverse (634044042), we get a palindrome (874484478).

The spelling of 240440436 in words is "two hundred forty million, four hundred forty thousand, four hundred thirty-six".