340978 has 12 divisors (see below), whose sum is σ = 562590. Its totient is φ = 154880.

The previous prime is 340957. The next prime is 340979. The reversal of 340978 is 879043.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 339889 + 1089 = 583^2 + 33^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340979) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 463 + ... + 946.

2³⁴⁰⁹⁷⁸ is an apocalyptic number.

340978 is a deficient number, since it is larger than the sum of its proper divisors (221612).

340978 is a wasteful number, since it uses less digits than its factorization.

340978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1433 (or 1422 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 340978 is about 583.9332153594. The cubic root of 340978 is about 69.8621778011.

It can be divided in two parts, 340 and 978, that multiplied together give a triangular number (332520 = T₈₁₅).

The spelling of 340978 in words is "three hundred forty thousand, nine hundred seventy-eight".