18012828 has 48 divisors (see below), whose sum is σ = 43868160. Its totient is φ = 5745600.

The previous prime is 18012793. The next prime is 18012847. The reversal of 18012828 is 82821081.

It is a junction number, because it is equal to n+sod(n) for n = 18012795 and 18012804.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66333 + ... + 66603.

It is an arithmetic number, because the mean of its divisors is an integer number (913920).

Almost surely, 2^18012828 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18012828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21934080).

18012828 is an abundant number, since it is smaller than the sum of its proper divisors (25855332).

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

18012828 is a wasteful number, since it uses less digits than its factorization.

18012828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498 (or 496 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 30.

The square root of 18012828 is about 4244.1522121620. The cubic root of 18012828 is about 262.1363818050.

The spelling of 18012828 in words is "eighteen million, twelve thousand, eight hundred twenty-eight".