18712026 has 32 divisors (see below), whose sum is σ = 41843520. Its totient is φ = 6198192.

The previous prime is 18712013. The next prime is 18712033. The reversal of 18712026 is 62021781.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8341 + ... + 10343.

It is an arithmetic number, because the mean of its divisors is an integer number (1307610).

Almost surely, 2^18712026 is an apocalyptic number.

18712026 is an abundant number, since it is smaller than the sum of its proper divisors (23131494).

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

18712026 is a wasteful number, since it uses less digits than its factorization.

18712026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2187 (or 2181 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 18712026 is about 4325.7399367045. The cubic root of 18712026 is about 265.4851726534.

The spelling of 18712026 in words is "eighteen million, seven hundred twelve thousand, twenty-six".