18073426 has 16 divisors (see below), whose sum is σ = 31051584. Its totient is φ = 7728624.

The previous prime is 18073421. The next prime is 18073439. The reversal of 18073426 is 62437081.

It is not an unprimeable number, because it can be changed into a prime (18073421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6736 + ... + 9028.

It is an arithmetic number, because the mean of its divisors is an integer number (1940724).

Almost surely, 2^18073426 is an apocalyptic number.

18073426 is a deficient number, since it is larger than the sum of its proper divisors (12978158).

18073426 is a wasteful number, since it uses less digits than its factorization.

18073426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2865.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 18073426 is about 4251.2852174372. The cubic root of 18073426 is about 262.4300088529.

The spelling of 18073426 in words is "eighteen million, seventy-three thousand, four hundred twenty-six".