343222728 has 32 divisors (see below), whose sum is σ = 862136160. Its totient is φ = 113863680.

The previous prime is 343222703. The next prime is 343222739. The reversal of 343222728 is 827222343.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28825 + ... + 38952.

It is an arithmetic number, because the mean of its divisors is an integer number (26941755).

Almost surely, 2^343222728 is an apocalyptic number.

It is an amenable number.

343222728 is an abundant number, since it is smaller than the sum of its proper divisors (518913432).

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

343222728 is a wasteful number, since it uses less digits than its factorization.

343222728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67997 (or 67993 counting only the distinct ones).

The product of its digits is 32256, while the sum is 33.

The square root of 343222728 is about 18526.2712924107. The cubic root of 343222728 is about 700.1514828624.

The spelling of 343222728 in words is "three hundred forty-three million, two hundred twenty-two thousand, seven hundred twenty-eight".