305109252 has 144 divisors (see below), whose sum is σ = 927518592. Its totient is φ = 82736640.

The previous prime is 305109229. The next prime is 305109253. The reversal of 305109252 is 252901503.

305109252 is a `hidden beast` number, since 305 + 109 + 252 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305109253) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 400552 + ... + 401312.

Almost surely, 2^305109252 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 305109252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (463759296).

305109252 is an abundant number, since it is smaller than the sum of its proper divisors (622409340).

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

305109252 is a wasteful number, since it uses less digits than its factorization.

305109252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 858 (or 853 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 305109252 is about 17467.3767921803. The cubic root of 305109252 is about 673.2119127746.

The spelling of 305109252 in words is "three hundred five million, one hundred nine thousand, two hundred fifty-two".