18163028 has 24 divisors (see below), whose sum is σ = 35030688. Its totient is φ = 8186976.

The previous prime is 18163003. The next prime is 18163039. The reversal of 18163028 is 82036181.

It is a super-2 number, since 2×18163028² = 659791172257568, which contains 22 as substring.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1826 + ... + 6297.

It is an arithmetic number, because the mean of its divisors is an integer number (1459612).

Almost surely, 2^18163028 is an apocalyptic number.

It is an amenable number.

18163028 is a deficient number, since it is larger than the sum of its proper divisors (16867660).

18163028 is a wasteful number, since it uses less digits than its factorization.

18163028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8183 (or 8181 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 18163028 is about 4261.8104134276. The cubic root of 18163028 is about 262.8629742045.

The spelling of 18163028 in words is "eighteen million, one hundred sixty-three thousand, twenty-eight".