30840346 has 24 divisors (see below), whose sum is σ = 49568220. Its totient is φ = 14387712.

The previous prime is 30840343. The next prime is 30840353. The reversal of 30840346 is 64304803.

It can be written as a sum of positive squares in 6 ways, for example, as 26409321 + 4431025 = 5139^2 + 2105^2 .

It is a super-2 number, since 2×30840346² = 1902253882799432, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30840343) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 132246 + ... + 132478.

Almost surely, 2^30840346 is an apocalyptic number.

30840346 is a deficient number, since it is larger than the sum of its proper divisors (18727874).

30840346 is a wasteful number, since it uses less digits than its factorization.

30840346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498 (or 481 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 30840346 is about 5553.4085028926. The cubic root of 30840346 is about 313.5978529307.

The spelling of 30840346 in words is "thirty million, eight hundred forty thousand, three hundred forty-six".