340020320 has 48 divisors (see below), whose sum is σ = 810846288. Its totient is φ = 134730240.

The previous prime is 340020319. The next prime is 340020323. The reversal of 340020320 is 23020043.

It is a super-2 number, since 2×340020320² = 231227636025804800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 340020295 and 340020304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340020323) 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, 7190 + ... + 27050.

It is an arithmetic number, because the mean of its divisors is an integer number (16892631).

Almost surely, 2^340020320 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 340020320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (405423144).

340020320 is an abundant number, since it is smaller than the sum of its proper divisors (470825968).

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

340020320 is a wasteful number, since it uses less digits than its factorization.

340020320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19983 (or 19975 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 14.

The square root of 340020320 is about 18439.6399097162. The cubic root of 340020320 is about 697.9671087366.

Adding to 340020320 its reverse (23020043), we get a palindrome (363040363).

The spelling of 340020320 in words is "three hundred forty million, twenty thousand, three hundred twenty".