18671268 has 96 divisors (see below), whose sum is σ = 55093248. Its totient is φ = 4820640.

The previous prime is 18671251. The next prime is 18671291. The reversal of 18671268 is 86217681.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 111721 + ... + 111887.

It is an arithmetic number, because the mean of its divisors is an integer number (573888).

Almost surely, 2^18671268 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18671268, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27546624).

18671268 is an abundant number, since it is smaller than the sum of its proper divisors (36421980).

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

18671268 is a wasteful number, since it uses less digits than its factorization.

18671268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214 (or 190 counting only the distinct ones).

The product of its digits is 32256, while the sum is 39.

The square root of 18671268 is about 4321.0262669880. The cubic root of 18671268 is about 265.2922751269.

The spelling of 18671268 in words is "eighteen million, six hundred seventy-one thousand, two hundred sixty-eight".