18342426 has 16 divisors (see below), whose sum is σ = 36805824. Its totient is φ = 6093984.

The previous prime is 18342403. The next prime is 18342433. The reversal of 18342426 is 62424381.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 18342393 and 18342402.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3006 + ... + 6761.

It is an arithmetic number, because the mean of its divisors is an integer number (2300364).

Almost surely, 2^18342426 is an apocalyptic number.

18342426 is an abundant number, since it is smaller than the sum of its proper divisors (18463398).

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

18342426 is a wasteful number, since it uses less digits than its factorization.

18342426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10085.

The product of its digits is 9216, while the sum is 30.

The square root of 18342426 is about 4282.8058559781. The cubic root of 18342426 is about 263.7255814714.

The spelling of 18342426 in words is "eighteen million, three hundred forty-two thousand, four hundred twenty-six".