18030368 has 12 divisors (see below), whose sum is σ = 35497350. Its totient is φ = 9015168.

The previous prime is 18030361. The next prime is 18030371. The reversal of 18030368 is 86303081.

It can be written as a sum of positive squares in only one way, i.e., 17205904 + 824464 = 4148^2 + 908^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 18030368.

It is not an unprimeable number, because it can be changed into a prime (18030361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 281693 + ... + 281756.

Almost surely, 2^18030368 is an apocalyptic number.

It is an amenable number.

18030368 is a deficient number, since it is larger than the sum of its proper divisors (17466982).

18030368 is an equidigital number, since it uses as much as digits as its factorization.

18030368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563459 (or 563451 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 18030368 is about 4246.2180820113. The cubic root of 18030368 is about 262.2214393457.

The spelling of 18030368 in words is "eighteen million, thirty thousand, three hundred sixty-eight".