340812 has 18 divisors (see below), whose sum is σ = 861588. Its totient is φ = 113592.

The previous prime is 340811. The next prime is 340819. The reversal of 340812 is 218043.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (340811) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4698 + ... + 4769.

It is an arithmetic number, because the mean of its divisors is an integer number (47866).

2³⁴⁰⁸¹² is an apocalyptic number.

It is an amenable number.

340812 is an abundant number, since it is smaller than the sum of its proper divisors (520776).

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

340812 is a wasteful number, since it uses less digits than its factorization.

340812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9477 (or 9472 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 340812 is about 583.7910585132. The cubic root of 340812 is about 69.8508388448.

Adding to 340812 its reverse (218043), we get a palindrome (558855).

The spelling of 340812 in words is "three hundred forty thousand, eight hundred twelve".