343421028 has 36 divisors (see below), whose sum is σ = 870017148. Its totient is φ = 114219840.

The previous prime is 343420997. The next prime is 343421047. The reversal of 343421028 is 820124343.

It can be written as a sum of positive squares in 2 ways, for example, as 219276864 + 124144164 = 14808^2 + 11142^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 343420992 and 343421010.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6250 + ... + 26942.

It is an arithmetic number, because the mean of its divisors is an integer number (24167143).

Almost surely, 2^343421028 is an apocalyptic number.

It is an amenable number.

343421028 is an abundant number, since it is smaller than the sum of its proper divisors (526596120).

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

343421028 is a wasteful number, since it uses less digits than its factorization.

343421028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21164 (or 21159 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 343421028 is about 18531.6223790579. The cubic root of 343421028 is about 700.2862964956.

The spelling of 343421028 in words is "three hundred forty-three million, four hundred twenty-one thousand, twenty-eight".