305006886 has 48 divisors (see below), whose sum is σ = 698480640. Its totient is φ = 95923440.

The previous prime is 305006851. The next prime is 305006951. The reversal of 305006886 is 688600503.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 305006886.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 88251 + ... + 91641.

It is an arithmetic number, because the mean of its divisors is an integer number (14551680).

Almost surely, 2^305006886 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 305006886, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (349240320).

305006886 is an abundant number, since it is smaller than the sum of its proper divisors (393473754).

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

305006886 is a wasteful number, since it uses less digits than its factorization.

305006886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3681 (or 3678 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 305006886 is about 17464.4463410668. The cubic root of 305006886 is about 673.1366154631.

The spelling of 305006886 in words is "three hundred five million, six thousand, eight hundred eighty-six".