30786164 has 12 divisors (see below), whose sum is σ = 53923044. Its totient is φ = 15379584.

The previous prime is 30786157. The next prime is 30786169. The reversal of 30786164 is 46168703.

It can be written as a sum of positive squares in 2 ways, for example, as 28090000 + 2696164 = 5300^2 + 1642^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30786169) 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 3 ways as a sum of consecutive naturals, for example, 3164 + ... + 8460.

It is an arithmetic number, because the mean of its divisors is an integer number (4493587).

Almost surely, 2^30786164 is an apocalyptic number.

It is an amenable number.

30786164 is a deficient number, since it is larger than the sum of its proper divisors (23136880).

30786164 is a wasteful number, since it uses less digits than its factorization.

30786164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6754 (or 6752 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 30786164 is about 5548.5280931072. The cubic root of 30786164 is about 313.4140966801.

The spelling of 30786164 in words is "thirty million, seven hundred eighty-six thousand, one hundred sixty-four".