18044426 has 8 divisors (see below), whose sum is σ = 27233184. Its totient is φ = 8966700.

The previous prime is 18044423. The next prime is 18044431. The reversal of 18044426 is 62444081.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (18044423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27350 + ... + 28001.

It is an arithmetic number, because the mean of its divisors is an integer number (3404148).

Almost surely, 2^18044426 is an apocalyptic number.

18044426 is a deficient number, since it is larger than the sum of its proper divisors (9188758).

18044426 is a wasteful number, since it uses less digits than its factorization.

18044426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55516.

The product of its (nonzero) digits is 6144, while the sum is 29.

The square root of 18044426 is about 4247.8731148658. The cubic root of 18044426 is about 262.2895716462.

The spelling of 18044426 in words is "eighteen million, forty-four thousand, four hundred twenty-six".