340940 has 12 divisors (see below), whose sum is σ = 716016. Its totient is φ = 136368.

The previous prime is 340939. The next prime is 340957. The reversal of 340940 is 49043.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 17047 = 340940 / (3 + 4 + 0 + 9 + 4 + 0).

It is a d-powerful number, because it can be written as 3⁹ + 4³ + 9⁵ + 0 + 4⁹ + 0 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8504 + ... + 8543.

It is an arithmetic number, because the mean of its divisors is an integer number (59668).

2³⁴⁰⁹⁴⁰ is an apocalyptic number.

It is an amenable number.

340940 is an abundant number, since it is smaller than the sum of its proper divisors (375076).

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

340940 is a wasteful number, since it uses less digits than its factorization.

340940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17056 (or 17054 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 340940 is about 583.9006764853. The cubic root of 340940 is about 69.8595824613.

Adding to 340940 its reverse (49043), we get a palindrome (389983).

It can be divided in two parts, 340 and 940, that multiplied together give a triangular number (319600 = T₇₉₉).

The spelling of 340940 in words is "three hundred forty thousand, nine hundred forty".