30686344 has 24 divisors (see below), whose sum is σ = 62306010. Its totient is φ = 14162304.

The previous prime is 30686339. The next prime is 30686389. The reversal of 30686344 is 44368603.

It can be written as a sum of positive squares in 3 ways, for example, as 5062500 + 25623844 = 2250^2 + 5062^2 .

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 5 ways as a sum of consecutive naturals, for example, 9997 + ... + 12700.

Almost surely, 2^30686344 is an apocalyptic number.

It is an amenable number.

30686344 is an abundant number, since it is smaller than the sum of its proper divisors (31619666).

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

30686344 is a wasteful number, since it uses less digits than its factorization.

30686344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22729 (or 22712 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 34.

The square root of 30686344 is about 5539.5256114581. The cubic root of 30686344 is about 313.0749955541.

The spelling of 30686344 in words is "thirty million, six hundred eighty-six thousand, three hundred forty-four".