343825830 has 128 divisors (see below), whose sum is σ = 952565760. Its totient is φ = 88179840.

The previous prime is 343825817. The next prime is 343825837. The reversal of 343825830 is 38528343.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (343825837) 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 63 ways as a sum of consecutive naturals, for example, 1268595 + ... + 1268865.

It is an arithmetic number, because the mean of its divisors is an integer number (7441920).

Almost surely, 2^343825830 is an apocalyptic number.

343825830 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 343825830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (476282880).

343825830 is an abundant number, since it is smaller than the sum of its proper divisors (608739930).

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

343825830 is a wasteful number, since it uses less digits than its factorization.

343825830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451 (or 445 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The square root of 343825830 is about 18542.5410879955. The cubic root of 343825830 is about 700.5613388506.

The spelling of 343825830 in words is "three hundred forty-three million, eight hundred twenty-five thousand, eight hundred thirty".