30609812 has 6 divisors (see below), whose sum is σ = 53567178. Its totient is φ = 15304904.

The previous prime is 30609797. The next prime is 30609823. The reversal of 30609812 is 21890603.

It can be written as a sum of positive squares in only one way, i.e., 29203216 + 1406596 = 5404^2 + 1186^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3826223 + ... + 3826230.

It is an arithmetic number, because the mean of its divisors is an integer number (8927863).

Almost surely, 2^30609812 is an apocalyptic number.

It is an amenable number.

30609812 is a deficient number, since it is larger than the sum of its proper divisors (22957366).

30609812 is a wasteful number, since it uses less digits than its factorization.

30609812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7652457 (or 7652455 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 30609812 is about 5532.6134873132. The cubic root of 30609812 is about 312.8145083243.

The spelling of 30609812 in words is "thirty million, six hundred nine thousand, eight hundred twelve".