18226800 has 180 divisors, whose sum is σ = 65063544. Its totient is φ = 4723200.

The previous prime is 18226799. The next prime is 18226807. The reversal of 18226800 is 862281.

It is a tau number, because it is divible by the number of its divisors (180).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18226807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 219559 + ... + 219641.

Almost surely, 2^18226800 is an apocalyptic number.

18226800 is a gapful number since it is divisible by the number (10) 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 18226800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32531772).

18226800 is an abundant number, since it is smaller than the sum of its proper divisors (46836744).

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

18226800 is a wasteful number, since it uses less digits than its factorization.

18226800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168 (or 154 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 18226800 is about 4269.2856545329. The cubic root of 18226800 is about 263.1702599102.

The spelling of 18226800 in words is "eighteen million, two hundred twenty-six thousand, eight hundred".