240668490 has 64 divisors (see below), whose sum is σ = 613526400. Its totient is φ = 60211200.

The previous prime is 240668423. The next prime is 240668503. The reversal of 240668490 is 94866042.

240668490 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 228465 + ... + 229515.

It is an arithmetic number, because the mean of its divisors is an integer number (9586350).

Almost surely, 2^240668490 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 240668490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (306763200).

240668490 is an abundant number, since it is smaller than the sum of its proper divisors (372857910).

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

240668490 is a wasteful number, since it uses less digits than its factorization.

240668490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1527.

The product of its (nonzero) digits is 82944, while the sum is 39.

The square root of 240668490 is about 15513.4938037826. The cubic root of 240668490 is about 622.0229534924.

The spelling of 240668490 in words is "two hundred forty million, six hundred sixty-eight thousand, four hundred ninety".