305009132 has 24 divisors (see below), whose sum is σ = 547184064. Its totient is φ = 148695552.

The previous prime is 305009129. The next prime is 305009143. The reversal of 305009132 is 231900503.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 305009098 and 305009107.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49148 + ... + 55004.

It is an arithmetic number, because the mean of its divisors is an integer number (22799336).

Almost surely, 2^305009132 is an apocalyptic number.

It is an amenable number.

305009132 is a deficient number, since it is larger than the sum of its proper divisors (242174932).

305009132 is a wasteful number, since it uses less digits than its factorization.

305009132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6185 (or 6183 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 23.

The square root of 305009132 is about 17464.5106430155. The cubic root of 305009132 is about 673.1382677330.

Adding to 305009132 its reverse (231900503), we get a palindrome (536909635).

The spelling of 305009132 in words is "three hundred five million, nine thousand, one hundred thirty-two".