30682947 has 16 divisors (see below), whose sum is σ = 41484960. Its totient is φ = 20170752.

The previous prime is 30682921. The next prime is 30682961. The reversal of 30682947 is 74928603.

It is not a de Polignac number, because 30682947 - 2¹¹ = 30680899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30682907) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 113929 + ... + 114197.

It is an arithmetic number, because the mean of its divisors is an integer number (2592810).

Almost surely, 2^30682947 is an apocalyptic number.

30682947 is a deficient number, since it is larger than the sum of its proper divisors (10802013).

30682947 is a wasteful number, since it uses less digits than its factorization.

30682947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 662.

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 30682947 is about 5539.2189882690. The cubic root of 30682947 is about 313.0634425866.

The spelling of 30682947 in words is "thirty million, six hundred eighty-two thousand, nine hundred forty-seven".