306345642 has 8 divisors (see below), whose sum is σ = 612691296. Its totient is φ = 102115212.

The previous prime is 306345551. The next prime is 306345653. The reversal of 306345642 is 246543603.

It is a sphenic number, since it is the product of 3 distinct primes.

306345642 is an admirable number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 25528798 + ... + 25528809.

It is an arithmetic number, because the mean of its divisors is an integer number (76586412).

Almost surely, 2^306345642 is an apocalyptic number.

306345642 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

306345642 is a wasteful number, since it uses less digits than its factorization.

306345642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51057612.

The product of its (nonzero) digits is 51840, while the sum is 33.

The square root of 306345642 is about 17502.7324152545. The cubic root of 306345642 is about 674.1200363243.

The spelling of 306345642 in words is "three hundred six million, three hundred forty-five thousand, six hundred forty-two".