340240240 has 40 divisors (see below), whose sum is σ = 800605008. Its totient is φ = 134453760.

The previous prime is 340240237. The next prime is 340240247. The reversal of 340240240 is 42042043.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340240247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18981 + ... + 32260.

Almost surely, 2^340240240 is an apocalyptic number.

It is an amenable number.

340240240 is an abundant number, since it is smaller than the sum of its proper divisors (460364768).

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

340240240 is a wasteful number, since it uses less digits than its factorization.

340240240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51337 (or 51331 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 340240240 is about 18445.6021858870. The cubic root of 340240240 is about 698.1175544955.

Adding to 340240240 its reverse (42042043), we get a palindrome (382282283).

The spelling of 340240240 in words is "three hundred forty million, two hundred forty thousand, two hundred forty".