18422800 has 120 divisors (see below), whose sum is σ = 49818240. Its totient is φ = 6489600.

The previous prime is 18422797. The next prime is 18422827. The reversal of 18422800 is 822481.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 233161 + ... + 233239.

It is an arithmetic number, because the mean of its divisors is an integer number (415152).

Almost surely, 2^18422800 is an apocalyptic number.

18422800 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 18422800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24909120).

18422800 is an abundant number, since it is smaller than the sum of its proper divisors (31395440).

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

18422800 is a wasteful number, since it uses less digits than its factorization.

18422800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161 (or 150 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 25.

The square root of 18422800 is about 4292.1789338284. The cubic root of 18422800 is about 264.1102233342.

The spelling of 18422800 in words is "eighteen million, four hundred twenty-two thousand, eight hundred".