18010028 has 12 divisors (see below), whose sum is σ = 31581480. Its totient is φ = 8986752.

The previous prime is 18010019. The next prime is 18010037. The reversal of 18010028 is 82001081.

It is an interprime number because it is at equal distance from previous prime (18010019) and next prime (18010037).

It is a super-2 number, since 2×18010028² = 648722217121568, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18009991 and 18010009.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2213 + ... + 6396.

It is an arithmetic number, because the mean of its divisors is an integer number (2631790).

Almost surely, 2^18010028 is an apocalyptic number.

It is an amenable number.

18010028 is a deficient number, since it is larger than the sum of its proper divisors (13571452).

18010028 is a wasteful number, since it uses less digits than its factorization.

18010028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9136 (or 9134 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

The square root of 18010028 is about 4243.8223336987. The cubic root of 18010028 is about 262.1227985242.

The spelling of 18010028 in words is "eighteen million, ten thousand, twenty-eight".