305421868 has 12 divisors (see below), whose sum is σ = 534635752. Its totient is φ = 152668800.

The previous prime is 305421859. The next prime is 305421869. The reversal of 305421868 is 868124503.

It is a happy number.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (305421869) 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 3 ways as a sum of consecutive naturals, for example, 10396 + ... + 26812.

Almost surely, 2^305421868 is an apocalyptic number.

It is an amenable number.

305421868 is a deficient number, since it is larger than the sum of its proper divisors (229213884).

305421868 is a wasteful number, since it uses less digits than its factorization.

305421868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21072 (or 21070 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 305421868 is about 17476.3230686549. The cubic root of 305421868 is about 673.4417593804.

The spelling of 305421868 in words is "three hundred five million, four hundred twenty-one thousand, eight hundred sixty-eight".