340446 has 16 divisors (see below), whose sum is σ = 710784. Its totient is φ = 108504.

The previous prime is 340429. The next prime is 340447. The reversal of 340446 is 644043.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340447) by changing a digit.

340446 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 (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1096 + ... + 1371.

It is an arithmetic number, because the mean of its divisors is an integer number (44424).

2³⁴⁰⁴⁴⁶ is an apocalyptic number.

340446 is an abundant number, since it is smaller than the sum of its proper divisors (370338).

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

340446 is a wasteful number, since it uses less digits than its factorization.

340446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2495.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 340446 is about 583.4775059932. The cubic root of 340446 is about 69.8258254805.

Adding to 340446 its reverse (644043), we get a palindrome (984489).

The spelling of 340446 in words is "three hundred forty thousand, four hundred forty-six".