306884140 has 12 divisors (see below), whose sum is σ = 644456736. Its totient is φ = 122753648.

The previous prime is 306884129. The next prime is 306884167. The reversal of 306884140 is 41488603.

306884140 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 306884096 and 306884105.

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 3 ways as a sum of consecutive naturals, for example, 7672084 + ... + 7672123.

It is an arithmetic number, because the mean of its divisors is an integer number (53704728).

Almost surely, 2^306884140 is an apocalyptic number.

It is an amenable number.

306884140 is an abundant number, since it is smaller than the sum of its proper divisors (337572596).

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

306884140 is a wasteful number, since it uses less digits than its factorization.

306884140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15344216 (or 15344214 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 306884140 is about 17518.1089162044. The cubic root of 306884140 is about 674.5147971725.

The spelling of 306884140 in words is "three hundred six million, eight hundred eighty-four thousand, one hundred forty".