305148812 has 12 divisors (see below), whose sum is σ = 546429576. Its totient is φ = 149026080.

The previous prime is 305148791. The next prime is 305148821. The reversal of 305148812 is 218841503.

It is a super-2 number, since 2×305148812² = 186231594930022688, which contains 22 as substring.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

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 3 ways as a sum of consecutive naturals, for example, 886889 + ... + 887232.

It is an arithmetic number, because the mean of its divisors is an integer number (45535798).

Almost surely, 2^305148812 is an apocalyptic number.

It is an amenable number.

305148812 is a deficient number, since it is larger than the sum of its proper divisors (241280764).

305148812 is a wasteful number, since it uses less digits than its factorization.

305148812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1774168 (or 1774166 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 305148812 is about 17468.5091521858. The cubic root of 305148812 is about 673.2410073936.

The spelling of 305148812 in words is "three hundred five million, one hundred forty-eight thousand, eight hundred twelve".