30389866 has 8 divisors (see below), whose sum is σ = 49091364. Its totient is φ = 14026080.

The previous prime is 30389861. The next prime is 30389893. The reversal of 30389866 is 66898303.

It can be written as a sum of positive squares in 2 ways, for example, as 25857225 + 4532641 = 5085^2 + 2129^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (30389861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 584395 + ... + 584446.

Almost surely, 2^30389866 is an apocalyptic number.

30389866 is a deficient number, since it is larger than the sum of its proper divisors (18701498).

30389866 is a wasteful number, since it uses less digits than its factorization.

30389866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1168856.

The product of its (nonzero) digits is 186624, while the sum is 43.

The square root of 30389866 is about 5512.7004271954. The cubic root of 30389866 is about 312.0634664336.

The spelling of 30389866 in words is "thirty million, three hundred eighty-nine thousand, eight hundred sixty-six".