18450828 has 120 divisors (see below), whose sum is σ = 54641664. Its totient is φ = 5378400.

The previous prime is 18450811. The next prime is 18450829. The reversal of 18450828 is 82805481.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 18450792 and 18450801.

It is not an unprimeable number, because it can be changed into a prime (18450829) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 110401 + ... + 110567.

Almost surely, 2^18450828 is an apocalyptic number.

18450828 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18450828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27320832).

18450828 is an abundant number, since it is smaller than the sum of its proper divisors (36190836).

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

18450828 is a wasteful number, since it uses less digits than its factorization.

18450828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225 (or 214 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 36.

The square root of 18450828 is about 4295.4427012824. The cubic root of 18450828 is about 264.2440924262.

The spelling of 18450828 in words is "eighteen million, four hundred fifty thousand, eight hundred twenty-eight".