306858940 has 24 divisors (see below), whose sum is σ = 646475760. Its totient is φ = 122348928.

The previous prime is 306858913. The next prime is 306858943. The reversal of 306858940 is 49858603.

306858940 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (306858943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18250 + ... + 30769.

It is an arithmetic number, because the mean of its divisors is an integer number (26936490).

Almost surely, 2^306858940 is an apocalyptic number.

It is an amenable number.

306858940 is an abundant number, since it is smaller than the sum of its proper divisors (339616820).

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

306858940 is a wasteful number, since it uses less digits than its factorization.

306858940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49341 (or 49339 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 43.

The square root of 306858940 is about 17517.3896457206. The cubic root of 306858940 is about 674.4963339199.

The spelling of 306858940 in words is "three hundred six million, eight hundred fifty-eight thousand, nine hundred forty".