306779868 has 36 divisors (see below), whose sum is σ = 787051720. Its totient is φ = 100732896.

The previous prime is 306779843. The next prime is 306779873. The reversal of 306779868 is 868977603.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×306779868² = 188227774820194848, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 61183 + ... + 66006.

Almost surely, 2^306779868 is an apocalyptic number.

It is an amenable number.

306779868 is an abundant number, since it is smaller than the sum of its proper divisors (480271852).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

306779868 is a wasteful number, since it uses less digits than its factorization.

306779868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127266 (or 127261 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 54.

The square root of 306779868 is about 17515.1325430326. The cubic root of 306779868 is about 674.4383937734.

The spelling of 306779868 in words is "three hundred six million, seven hundred seventy-nine thousand, eight hundred sixty-eight".