305768390 has 16 divisors (see below), whose sum is σ = 550724832. Its totient is φ = 122231424.

The previous prime is 305768383. The next prime is 305768429. The reversal of 305768390 is 93867503.

305768390 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9167 + ... + 26373.

It is an arithmetic number, because the mean of its divisors is an integer number (34420302).

Almost surely, 2^305768390 is an apocalyptic number.

305768390 is a deficient number, since it is larger than the sum of its proper divisors (244956442).

305768390 is a wasteful number, since it uses less digits than its factorization.

305768390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18991.

The product of its (nonzero) digits is 136080, while the sum is 41.

The square root of 305768390 is about 17486.2343001574. The cubic root of 305768390 is about 673.6963517003.

The spelling of 305768390 in words is "three hundred five million, seven hundred sixty-eight thousand, three hundred ninety".