340398 has 12 divisors (see below), whose sum is σ = 737568. Its totient is φ = 113460.

The previous prime is 340397. The next prime is 340409. The reversal of 340398 is 893043.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 340398.

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 5 ways as a sum of consecutive naturals, for example, 9438 + ... + 9473.

It is an arithmetic number, because the mean of its divisors is an integer number (61464).

2³⁴⁰³⁹⁸ is an apocalyptic number.

340398 is an abundant number, since it is smaller than the sum of its proper divisors (397170).

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

340398 is a wasteful number, since it uses less digits than its factorization.

340398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18919 (or 18916 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 340398 is about 583.4363718521. The cubic root of 340398 is about 69.8225437098.

It can be divided in two parts, 3 and 40398, that added together give a square (40401 = 201²).

The spelling of 340398 in words is "three hundred forty thousand, three hundred ninety-eight".