18342224 has 20 divisors (see below), whose sum is σ = 37083936. Its totient is φ = 8772192.

The previous prime is 18342223. The next prime is 18342251. The reversal of 18342224 is 42224381.

It is a junction number, because it is equal to n+sod(n) for n = 18342193 and 18342202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18342223) 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 3 ways as a sum of consecutive naturals, for example, 24554 + ... + 25289.

Almost surely, 2^18342224 is an apocalyptic number.

It is an amenable number.

18342224 is an abundant number, since it is smaller than the sum of its proper divisors (18741712).

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

18342224 is a wasteful number, since it uses less digits than its factorization.

18342224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49874 (or 49868 counting only the distinct ones).

The product of its digits is 3072, while the sum is 26.

The square root of 18342224 is about 4282.7822732425. The cubic root of 18342224 is about 263.7246133558.

The spelling of 18342224 in words is "eighteen million, three hundred forty-two thousand, two hundred twenty-four".