340144240 has 80 divisors (see below), whose sum is σ = 829071936. Its totient is φ = 129536000.

The previous prime is 340144229. The next prime is 340144247. The reversal of 340144240 is 42441043.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340144247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 737610 + ... + 738070.

Almost surely, 2^340144240 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 340144240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (414535968).

340144240 is an abundant number, since it is smaller than the sum of its proper divisors (488927696).

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

340144240 is a wasteful number, since it uses less digits than its factorization.

340144240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 898 (or 892 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 340144240 is about 18442.9997560050. Note that the first 3 decimals coincide. The cubic root of 340144240 is about 698.0518895314.

Adding to 340144240 its reverse (42441043), we get a palindrome (382585283).

The spelling of 340144240 in words is "three hundred forty million, one hundred forty-four thousand, two hundred forty".