343858728 has 32 divisors (see below), whose sum is σ = 910215360. Its totient is φ = 107877120.

The previous prime is 343858687. The next prime is 343858733. The reversal of 343858728 is 827858343.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 420988 + ... + 421803.

It is an arithmetic number, because the mean of its divisors is an integer number (28444230).

Almost surely, 2^343858728 is an apocalyptic number.

It is an amenable number.

343858728 is an abundant number, since it is smaller than the sum of its proper divisors (566356632).

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

343858728 is a wasteful number, since it uses less digits than its factorization.

343858728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 842817 (or 842813 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 48.

The square root of 343858728 is about 18543.4281620201. The cubic root of 343858728 is about 700.5836818800.

The spelling of 343858728 in words is "three hundred forty-three million, eight hundred fifty-eight thousand, seven hundred twenty-eight".