340400 has 60 divisors (see below), whose sum is σ = 876432. Its totient is φ = 126720.

The previous prime is 340397. The next prime is 340409. The reversal of 340400 is 4043.

It is not an unprimeable number, because it can be changed into a prime (340409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9182 + ... + 9218.

2³⁴⁰⁴⁰⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 340400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (438216).

340400 is an abundant number, since it is smaller than the sum of its proper divisors (536032).

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

340400 is a wasteful number, since it uses less digits than its factorization.

340400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78 (or 67 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 11.

The square root of 340400 is about 583.4380858326. The cubic root of 340400 is about 69.8226804564.

Adding to 340400 its reverse (4043), we get a palindrome (344443).

The spelling of 340400 in words is "three hundred forty thousand, four hundred", and thus it is an iban number.