18870026 has 16 divisors (see below), whose sum is σ = 32598720. Its totient is φ = 8024640.

The previous prime is 18870023. The next prime is 18870043. The reversal of 18870026 is 62007881.

It is a junction number, because it is equal to n+sod(n) for n = 18869974 and 18870001.

It is not an unprimeable number, because it can be changed into a prime (18870023) 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, 3311 + ... + 6978.

It is an arithmetic number, because the mean of its divisors is an integer number (2037420).

Almost surely, 2^18870026 is an apocalyptic number.

18870026 is a deficient number, since it is larger than the sum of its proper divisors (13728694).

18870026 is a wasteful number, since it uses less digits than its factorization.

18870026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10429.

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 18870026 is about 4343.9643184538. The cubic root of 18870026 is about 266.2303110188.

The spelling of 18870026 in words is "eighteen million, eight hundred seventy thousand, twenty-six".