305688426 has 8 divisors (see below), whose sum is σ = 611376864. Its totient is φ = 101896140.

The previous prime is 305688347. The next prime is 305688443. The reversal of 305688426 is 624886503.

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

305688426 is an admirable number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25474030 + ... + 25474041.

It is an arithmetic number, because the mean of its divisors is an integer number (76422108).

Almost surely, 2^305688426 is an apocalyptic number.

305688426 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.

305688426 is a wasteful number, since it uses less digits than its factorization.

305688426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50948076.

The product of its (nonzero) digits is 276480, while the sum is 42.

The square root of 305688426 is about 17483.9476663596. The cubic root of 305688426 is about 673.6376186269.

The spelling of 305688426 in words is "three hundred five million, six hundred eighty-eight thousand, four hundred twenty-six".