340424656 has 80 divisors (see below), whose sum is σ = 808698240. Its totient is φ = 136604160.

The previous prime is 340424647. The next prime is 340424663. The reversal of 340424656 is 656424043.

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, 49390 + ... + 55858.

It is an arithmetic number, because the mean of its divisors is an integer number (10108728).

Almost surely, 2^340424656 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 340424656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (404349120).

340424656 is an abundant number, since it is smaller than the sum of its proper divisors (468273584).

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

340424656 is a wasteful number, since it uses less digits than its factorization.

340424656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6524 (or 6518 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 34.

The square root of 340424656 is about 18450.6004238345. The cubic root of 340424656 is about 698.2436622456.

Adding to 340424656 its reverse (656424043), we get a palindrome (996848699).

The spelling of 340424656 in words is "three hundred forty million, four hundred twenty-four thousand, six hundred fifty-six".