305324172 has 72 divisors (see below), whose sum is σ = 808813824. Its totient is φ = 96931296.

The previous prime is 305324147. The next prime is 305324221. The reversal of 305324172 is 271423503.

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, 233673 + ... + 234975.

Almost surely, 2^305324172 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 305324172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (404406912).

305324172 is an abundant number, since it is smaller than the sum of its proper divisors (503489652).

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

305324172 is a wasteful number, since it uses less digits than its factorization.

305324172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1619 (or 1614 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 305324172 is about 17473.5277491410. The cubic root of 305324172 is about 673.3699465980.

Adding to 305324172 its reverse (271423503), we get a palindrome (576747675).

It can be divided in two parts, 3053 and 24172, that added together give a square (27225 = 165²).

The spelling of 305324172 in words is "three hundred five million, three hundred twenty-four thousand, one hundred seventy-two".