340390 has 8 divisors (see below), whose sum is σ = 612720. Its totient is φ = 136152.

The previous prime is 340387. The next prime is 340393. The reversal of 340390 is 93043.

It is an interprime number because it is at equal distance from previous prime (340387) and next prime (340393).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17010 + ... + 17029.

It is an arithmetic number, because the mean of its divisors is an integer number (76590).

2³⁴⁰³⁹⁰ is an apocalyptic number.

340390 is a deficient number, since it is larger than the sum of its proper divisors (272330).

340390 is a wasteful number, since it uses less digits than its factorization.

340390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34046.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 340390 is about 583.4295158800. The cubic root of 340390 is about 69.8219967180.

The spelling of 340390 in words is "three hundred forty thousand, three hundred ninety".