340000 has 60 divisors (see below), whose sum is σ = 885654. Its totient is φ = 128000.

The previous prime is 339991. The next prime is 340007. The reversal of 340000 is 43.

It can be written as a sum of positive squares in 5 ways, for example, as 21904 + 318096 = 148^2 + 564^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340007) by changing a digit.

340000 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 19992 + ... + 20008.

2³⁴⁰⁰⁰⁰ 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 340000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (442827).

340000 is an abundant number, since it is smaller than the sum of its proper divisors (545654).

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

340000 is an equidigital number, since it uses as much as digits as its factorization.

340000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47 (or 24 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 7.

The square root of 340000 is about 583.0951894845. The cubic root of 340000 is about 69.7953204691.

Adding to 340000 its reverse (43), we get a palindrome (340043).

The spelling of 340000 in words is "three hundred forty thousand", and thus it is an iban number.