30345786 has 64 divisors (see below), whose sum is σ = 71850240. Its totient is φ = 9472320.

The previous prime is 30345773. The next prime is 30345797. The reversal of 30345786 is 68754303.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 30345786.

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 31 ways as a sum of consecutive naturals, for example, 65596 + ... + 66056.

It is an arithmetic number, because the mean of its divisors is an integer number (1122660).

Almost surely, 2^30345786 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30345786, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35925120).

30345786 is an abundant number, since it is smaller than the sum of its proper divisors (41504454).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30345786 is a wasteful number, since it uses less digits than its factorization.

30345786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548 (or 542 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 30345786 is about 5508.7009357924. The cubic root of 30345786 is about 311.9125124523.

The spelling of 30345786 in words is "thirty million, three hundred forty-five thousand, seven hundred eighty-six".