30663018 has 12 divisors (see below), whose sum is σ = 66436578. Its totient is φ = 10221000.

The previous prime is 30663013. The next prime is 30663023. The reversal of 30663018 is 81036603.

It is an interprime number because it is at equal distance from previous prime (30663013) and next prime (30663023).

It can be written as a sum of positive squares in only one way, i.e., 22212369 + 8450649 = 4713^2 + 2907^2 .

It is a junction number, because it is equal to n+sod(n) for n = 30662982 and 30663000.

It is not an unprimeable number, because it can be changed into a prime (30663011) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 851733 + ... + 851768.

Almost surely, 2^30663018 is an apocalyptic number.

30663018 is an abundant number, since it is smaller than the sum of its proper divisors (35773560).

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

30663018 is a wasteful number, since it uses less digits than its factorization.

30663018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1703509 (or 1703506 counting only the distinct ones).

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

The square root of 30663018 is about 5537.4197962589. The cubic root of 30663018 is about 312.9956482228.

It can be divided in two parts, 3066 and 3018, that added together give a square (6084 = 78²).

The spelling of 30663018 in words is "thirty million, six hundred sixty-three thousand, eighteen".