240440340 has 192 divisors, whose sum is σ = 810270720. Its totient is φ = 52116480.

The previous prime is 240440329. The next prime is 240440341. The reversal of 240440340 is 43044042.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240440341) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 768024 + ... + 768336.

It is an arithmetic number, because the mean of its divisors is an integer number (4220160).

Almost surely, 2^240440340 is an apocalyptic number.

240440340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 240440340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (405135360).

240440340 is an abundant number, since it is smaller than the sum of its proper divisors (569830380).

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

240440340 is a wasteful number, since it uses less digits than its factorization.

240440340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422 (or 420 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 240440340 is about 15506.1387843654. The cubic root of 240440340 is about 621.8263353079.

Adding to 240440340 its reverse (43044042), we get a palindrome (283484382).

The spelling of 240440340 in words is "two hundred forty million, four hundred forty thousand, three hundred forty".