18016026 has 48 divisors (see below), whose sum is σ = 42254784. Its totient is φ = 5105856.

The previous prime is 18016021. The next prime is 18016043. The reversal of 18016026 is 62061081.

It is a junction number, because it is equal to n+sod(n) for n = 18015987 and 18016005.

It is not an unprimeable number, because it can be changed into a prime (18016021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 68371 + ... + 68633.

It is an arithmetic number, because the mean of its divisors is an integer number (880308).

Almost surely, 2^18016026 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18016026, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21127392).

18016026 is an abundant number, since it is smaller than the sum of its proper divisors (24238758).

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

18016026 is a wasteful number, since it uses less digits than its factorization.

18016026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515 (or 508 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 18016026 is about 4244.5289491297. The cubic root of 18016026 is about 262.1518941303.

The spelling of 18016026 in words is "eighteen million, sixteen thousand, twenty-six".