30663530 has 16 divisors (see below), whose sum is σ = 58099680. Its totient is φ = 11619792.

The previous prime is 30663497. The next prime is 30663533. The reversal of 30663530 is 3536603.

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 30663530.

It is not an unprimeable number, because it can be changed into a prime (30663533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80504 + ... + 80883.

It is an arithmetic number, because the mean of its divisors is an integer number (3631230).

Almost surely, 2^30663530 is an apocalyptic number.

30663530 is a deficient number, since it is larger than the sum of its proper divisors (27436150).

30663530 is a wasteful number, since it uses less digits than its factorization.

30663530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161413.

The product of its (nonzero) digits is 4860, while the sum is 26.

The square root of 30663530 is about 5537.4660269838. The cubic root of 30663530 is about 312.9973903092.

It can be divided in two parts, 306 and 63530, that added together give a palindrome (63836).

The spelling of 30663530 in words is "thirty million, six hundred sixty-three thousand, five hundred thirty".