30683986 has 8 divisors (see below), whose sum is σ = 47510784. Its totient is φ = 14847060.

The previous prime is 30683977. The next prime is 30683987. The reversal of 30683986 is 68938603.

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

It is not an unprimeable number, because it can be changed into a prime (30683987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 247390 + ... + 247513.

It is an arithmetic number, because the mean of its divisors is an integer number (5938848).

Almost surely, 2^30683986 is an apocalyptic number.

30683986 is a deficient number, since it is larger than the sum of its proper divisors (16826798).

30683986 is a wasteful number, since it uses less digits than its factorization.

30683986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494936.

The product of its (nonzero) digits is 186624, while the sum is 43.

The square root of 30683986 is about 5539.3127732599. The cubic root of 30683986 is about 313.0669762459.

The spelling of 30683986 in words is "thirty million, six hundred eighty-three thousand, nine hundred eighty-six".