343421878 has 8 divisors (see below), whose sum is σ = 537529968. Its totient is φ = 164245224.

The previous prime is 343421861. The next prime is 343421891. The reversal of 343421878 is 878124343.

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

It is a self number, because there is not a number n which added to its sum of digits gives 343421878.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3732801 + ... + 3732892.

It is an arithmetic number, because the mean of its divisors is an integer number (67191246).

Almost surely, 2^343421878 is an apocalyptic number.

343421878 is a deficient number, since it is larger than the sum of its proper divisors (194108090).

343421878 is a wasteful number, since it uses less digits than its factorization.

343421878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7465718.

The product of its digits is 129024, while the sum is 40.

The square root of 343421878 is about 18531.6453128156. The cubic root of 343421878 is about 700.2868742538.

The spelling of 343421878 in words is "three hundred forty-three million, four hundred twenty-one thousand, eight hundred seventy-eight".