240391018240 has 144 divisors (see below), whose sum is σ = 584254016640. Its totient is φ = 94755225600.

The previous prime is 240391018237. The next prime is 240391018291. The reversal of 240391018240 is 42810193042.

It is a junction number, because it is equal to n+sod(n) for n = 240391018196 and 240391018205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29670190 + ... + 29678290.

It is an arithmetic number, because the mean of its divisors is an integer number (4057319560).

Almost surely, 2^240391018240 is an apocalyptic number.

240391018240 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 240391018240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (292127008320).

240391018240 is an abundant number, since it is smaller than the sum of its proper divisors (343862998400).

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

240391018240 is an equidigital number, since it uses as much as digits as its factorization.

240391018240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8458 (or 8444 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The spelling of 240391018240 in words is "two hundred forty billion, three hundred ninety-one million, eighteen thousand, two hundred forty".