340220320 has 192 divisors, whose sum is σ = 946463616. Its totient is φ = 114196480.

The previous prime is 340220299. The next prime is 340220329. The reversal of 340220320 is 23022043.

It is a super-2 number, since 2×340220320² = 231499732281804800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 340220294 and 340220303.

It is not an unprimeable number, because it can be changed into a prime (340220329) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2483292 + ... + 2483428.

It is an arithmetic number, because the mean of its divisors is an integer number (4929498).

Almost surely, 2^340220320 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 340220320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (473231808).

340220320 is an abundant number, since it is smaller than the sum of its proper divisors (606243296).

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

340220320 is a wasteful number, since it uses less digits than its factorization.

340220320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263 (or 255 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 340220320 is about 18445.0622118767. The cubic root of 340220320 is about 698.1039300311.

Adding to 340220320 its reverse (23022043), we get a palindrome (363242363).

The spelling of 340220320 in words is "three hundred forty million, two hundred twenty thousand, three hundred twenty".