30705850 has 72 divisors (see below), whose sum is σ = 67683168. Its totient is φ = 10332000.

The previous prime is 30705847. The next prime is 30705863. The reversal of 30705850 is 5850703.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 203275 + ... + 203425.

It is an arithmetic number, because the mean of its divisors is an integer number (940044).

Almost surely, 2^30705850 is an apocalyptic number.

30705850 is an abundant number, since it is smaller than the sum of its proper divisors (36977318).

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

30705850 is a wasteful number, since it uses less digits than its factorization.

30705850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260 (or 248 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 30705850 is about 5541.2859518346. The cubic root of 30705850 is about 313.1413176437.

The spelling of 30705850 in words is "thirty million, seven hundred five thousand, eight hundred fifty".