343278 has 40 divisors (see below), whose sum is σ = 833448. Its totient is φ = 104976.

The previous prime is 343267. The next prime is 343289. The reversal of 343278 is 872343.

It is an interprime number because it is at equal distance from previous prime (343267) and next prime (343289).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an alternating number because its digits alternate between odd and even.

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 343278.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2025 + ... + 2187.

2³⁴³²⁷⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 343278, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (416724).

343278 is an abundant number, since it is smaller than the sum of its proper divisors (490170).

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

343278 is a wasteful number, since it uses less digits than its factorization.

343278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190 (or 181 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 343278 is about 585.8993087554. The cubic root of 343278 is about 70.0189064577.

The spelling of 343278 in words is "three hundred forty-three thousand, two hundred seventy-eight".