30130866 has 20 divisors (see below), whose sum is σ = 67515822. Its totient is φ = 10043568.

The previous prime is 30130843. The next prime is 30130921. The reversal of 30130866 is 66803103.

It can be written as a sum of positive squares in only one way, i.e., 18740241 + 11390625 = 4329^2 + 3375^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

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 9 ways as a sum of consecutive naturals, for example, 92835 + ... + 93158.

Almost surely, 2^30130866 is an apocalyptic number.

30130866 is an abundant number, since it is smaller than the sum of its proper divisors (37384956).

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

30130866 is a wasteful number, since it uses less digits than its factorization.

30130866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186007 (or 185998 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 30130866 is about 5489.1589519707. The cubic root of 30130866 is about 311.1744075389.

Adding to 30130866 its reverse (66803103), we get a palindrome (96933969).

The spelling of 30130866 in words is "thirty million, one hundred thirty thousand, eight hundred sixty-six".