18463228 has 48 divisors (see below), whose sum is σ = 38707200. Its totient is φ = 7539840.

The previous prime is 18463217. The next prime is 18463229. The reversal of 18463228 is 82236481.

It is a junction number, because it is equal to n+sod(n) for n = 18463193 and 18463202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18463229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77133 + ... + 77371.

It is an arithmetic number, because the mean of its divisors is an integer number (806400).

Almost surely, 2^18463228 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 18463228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19353600).

18463228 is an abundant number, since it is smaller than the sum of its proper divisors (20243972).

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

18463228 is a wasteful number, since it uses less digits than its factorization.

18463228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370 (or 368 counting only the distinct ones).

The product of its digits is 18432, while the sum is 34.

The square root of 18463228 is about 4296.8858490772. The cubic root of 18463228 is about 264.3032748288.

The spelling of 18463228 in words is "eighteen million, four hundred sixty-three thousand, two hundred twenty-eight".