343896978 has 16 divisors (see below), whose sum is σ = 728252640. Its totient is φ = 107889216.

The previous prime is 343896977. The next prime is 343897007. The reversal of 343896978 is 879698343.

It is a happy number.

It is a super-3 number, since 3×343896978³ (a number of 27 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (343896977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1685668 + ... + 1685871.

It is an arithmetic number, because the mean of its divisors is an integer number (45515790).

Almost surely, 2^343896978 is an apocalyptic number.

343896978 is an abundant number, since it is smaller than the sum of its proper divisors (384355662).

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

343896978 is a wasteful number, since it uses less digits than its factorization.

343896978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3371561.

The product of its digits is 7838208, while the sum is 57.

The square root of 343896978 is about 18544.4594960328. The cubic root of 343896978 is about 700.6096579860.

The spelling of 343896978 in words is "three hundred forty-three million, eight hundred ninety-six thousand, nine hundred seventy-eight".