305648133 has 12 divisors (see below), whose sum is σ = 474066720. Its totient is φ = 174655992.

The previous prime is 305648131. The next prime is 305648137. The reversal of 305648133 is 331846503.

It is not a de Polignac number, because 305648133 - 2¹ = 305648131 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 305648094 and 305648103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305648131) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 1039473 + ... + 1039766.

It is an arithmetic number, because the mean of its divisors is an integer number (39505560).

Almost surely, 2^305648133 is an apocalyptic number.

It is an amenable number.

305648133 is a deficient number, since it is larger than the sum of its proper divisors (168418587).

305648133 is a wasteful number, since it uses less digits than its factorization.

305648133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2079256 (or 2079249 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 305648133 is about 17482.7953428506. The cubic root of 305648133 is about 673.6080197816.

The spelling of 305648133 in words is "three hundred five million, six hundred forty-eight thousand, one hundred thirty-three".