306646540 has 12 divisors (see below), whose sum is σ = 643957776. Its totient is φ = 122658608.

The previous prime is 306646519. The next prime is 306646577. The reversal of 306646540 is 45646603.

It is a junction number, because it is equal to n+sod(n) for n = 306646496 and 306646505.

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 3 ways as a sum of consecutive naturals, for example, 7666144 + ... + 7666183.

It is an arithmetic number, because the mean of its divisors is an integer number (53663148).

Almost surely, 2^306646540 is an apocalyptic number.

It is an amenable number.

306646540 is an abundant number, since it is smaller than the sum of its proper divisors (337311236).

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

306646540 is a wasteful number, since it uses less digits than its factorization.

306646540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15332336 (or 15332334 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 34.

The square root of 306646540 is about 17511.3260491603. The cubic root of 306646540 is about 674.3406748969.

The spelling of 306646540 in words is "three hundred six million, six hundred forty-six thousand, five hundred forty".