340642720 has 96 divisors (see below), whose sum is σ = 901829376. Its totient is φ = 120499200.

The previous prime is 340642717. The next prime is 340642721. The reversal of 340642720 is 27246043.

It is not an unprimeable number, because it can be changed into a prime (340642721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62505 + ... + 67735.

It is an arithmetic number, because the mean of its divisors is an integer number (9394056).

Almost surely, 2^340642720 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 340642720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (450914688).

340642720 is an abundant number, since it is smaller than the sum of its proper divisors (561186656).

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

340642720 is a wasteful number, since it uses less digits than its factorization.

340642720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5294 (or 5286 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 28.

The square root of 340642720 is about 18456.5088789836. The cubic root of 340642720 is about 698.3927204916.

Adding to 340642720 its reverse (27246043), we get a palindrome (367888763).

The spelling of 340642720 in words is "three hundred forty million, six hundred forty-two thousand, seven hundred twenty".