18080426 has 32 divisors (see below), whose sum is σ = 34207488. Its totient is φ = 6975360.

The previous prime is 18080423. The next prime is 18080431. The reversal of 18080426 is 62408081.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (18080423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6251 + ... + 8673.

It is an arithmetic number, because the mean of its divisors is an integer number (1068984).

Almost surely, 2^18080426 is an apocalyptic number.

18080426 is a deficient number, since it is larger than the sum of its proper divisors (16127062).

18080426 is a wasteful number, since it uses less digits than its factorization.

18080426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2486.

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 18080426 is about 4252.1084181850. The cubic root of 18080426 is about 262.4638849786.

The spelling of 18080426 in words is "eighteen million, eighty thousand, four hundred twenty-six".