18168028 has 12 divisors (see below), whose sum is σ = 33467560. Its totient is φ = 8605872.

The previous prime is 18168023. The next prime is 18168037. The reversal of 18168028 is 82086181.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 18167984 and 18168002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18168023) 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, 119451 + ... + 119602.

Almost surely, 2^18168028 is an apocalyptic number.

It is an amenable number.

18168028 is a deficient number, since it is larger than the sum of its proper divisors (15299532).

18168028 is a wasteful number, since it uses less digits than its factorization.

18168028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239076 (or 239074 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 34.

The square root of 18168028 is about 4262.3969782272. The cubic root of 18168028 is about 262.8870926919.

The spelling of 18168028 in words is "eighteen million, one hundred sixty-eight thousand, twenty-eight".