30685894 has 8 divisors (see below), whose sum is σ = 46176840. Its totient is φ = 15293616.

The previous prime is 30685883. The next prime is 30685903. The reversal of 30685894 is 49858603.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 30685894.

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 3 ways as a sum of consecutive naturals, for example, 23884 + ... + 25135.

It is an arithmetic number, because the mean of its divisors is an integer number (5772105).

Almost surely, 2^30685894 is an apocalyptic number.

30685894 is a deficient number, since it is larger than the sum of its proper divisors (15490946).

30685894 is a wasteful number, since it uses less digits than its factorization.

30685894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49334.

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

The square root of 30685894 is about 5539.4849941127. The cubic root of 30685894 is about 313.0734651835.

The spelling of 30685894 in words is "thirty million, six hundred eighty-five thousand, eight hundred ninety-four".