305812868 has 6 divisors (see below), whose sum is σ = 535172526. Its totient is φ = 152906432.

The previous prime is 305812867. The next prime is 305812877. The reversal of 305812868 is 868218503.

It can be written as a sum of positive squares in only one way, i.e., 277955584 + 27857284 = 16672^2 + 5278^2 .

It is not an unprimeable number, because it can be changed into a prime (305812867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38226605 + ... + 38226612.

It is an arithmetic number, because the mean of its divisors is an integer number (89195421).

Almost surely, 2^305812868 is an apocalyptic number.

It is an amenable number.

305812868 is a deficient number, since it is larger than the sum of its proper divisors (229359658).

305812868 is a wasteful number, since it uses less digits than its factorization.

305812868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76453221 (or 76453219 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 41.

The square root of 305812868 is about 17487.5060543235. The cubic root of 305812868 is about 673.7290160899.

The spelling of 305812868 in words is "three hundred five million, eight hundred twelve thousand, eight hundred sixty-eight".