18222048 has 144 divisors (see below), whose sum is σ = 57972096. Its totient is φ = 5391360.

The previous prime is 18222047. The next prime is 18222053. The reversal of 18222048 is 84022281.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18222047) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 115986 + ... + 116142.

It is an arithmetic number, because the mean of its divisors is an integer number (402584).

Almost surely, 2^18222048 is an apocalyptic number.

18222048 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 18222048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28986048).

18222048 is an abundant number, since it is smaller than the sum of its proper divisors (39750048).

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

18222048 is a wasteful number, since it uses less digits than its factorization.

18222048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217 (or 206 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The square root of 18222048 is about 4268.7290848682. The cubic root of 18222048 is about 263.1473871117.

The spelling of 18222048 in words is "eighteen million, two hundred twenty-two thousand, forty-eight".