305328861 has 12 divisors (see below), whose sum is σ = 441338560. Its totient is φ = 203410440.

The previous prime is 305328839. The next prime is 305328871. The reversal of 305328861 is 168823503.

It is not a de Polignac number, because 305328861 - 2⁶ = 305328797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305328871) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2700 + ... + 24858.

Almost surely, 2^305328861 is an apocalyptic number.

It is an amenable number.

305328861 is a deficient number, since it is larger than the sum of its proper divisors (136009699).

305328861 is a wasteful number, since it uses less digits than its factorization.

305328861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23696 (or 23693 counting only the distinct ones).

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

The square root of 305328861 is about 17473.6619230200. The cubic root of 305328861 is about 673.3733936616.

It can be divided in two parts, 30532 and 8861, that added together give a palindrome (39393).

The spelling of 305328861 in words is "three hundred five million, three hundred twenty-eight thousand, eight hundred sixty-one".