18027698 has 8 divisors (see below), whose sum is σ = 29121708. Its totient is φ = 8320464.

The previous prime is 18027697. The next prime is 18027727. The reversal of 18027698 is 89672081.

It can be written as a sum of positive squares in 2 ways, for example, as 18003049 + 24649 = 4243^2 + 157^2 .

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 (18027697) 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, 346661 + ... + 346712.

Almost surely, 2^18027698 is an apocalyptic number.

18027698 is a deficient number, since it is larger than the sum of its proper divisors (11094010).

18027698 is a wasteful number, since it uses less digits than its factorization.

18027698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693388.

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 18027698 is about 4245.9036729535. The cubic root of 18027698 is about 262.2084951505.

The spelling of 18027698 in words is "eighteen million, twenty-seven thousand, six hundred ninety-eight".