18005028 has 12 divisors (see below), whose sum is σ = 42011760. Its totient is φ = 6001672.

The previous prime is 18004999. The next prime is 18005041. The reversal of 18005028 is 82050081.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 18004989 and 18005007.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 750198 + ... + 750221.

It is an arithmetic number, because the mean of its divisors is an integer number (3500980).

Almost surely, 2^18005028 is an apocalyptic number.

It is an amenable number.

18005028 is an abundant number, since it is smaller than the sum of its proper divisors (24006732).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18005028 is a wasteful number, since it uses less digits than its factorization.

18005028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1500426 (or 1500424 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 24.

The square root of 18005028 is about 4243.2332012276. The cubic root of 18005028 is about 262.0985391635.

The spelling of 18005028 in words is "eighteen million, five thousand, twenty-eight".