18427134 has 48 divisors (see below), whose sum is σ = 41433984. Its totient is φ = 5418000.

The previous prime is 18427103. The next prime is 18427141. The reversal of 18427134 is 43172481.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 121959 + ... + 122109.

It is an arithmetic number, because the mean of its divisors is an integer number (863208).

Almost surely, 2^18427134 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18427134, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20716992).

18427134 is an abundant number, since it is smaller than the sum of its proper divisors (23006850).

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

18427134 is a wasteful number, since it uses less digits than its factorization.

18427134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253 (or 210 counting only the distinct ones).

The product of its digits is 5376, while the sum is 30.

The square root of 18427134 is about 4292.6837759146. The cubic root of 18427134 is about 264.1309325272.

The spelling of 18427134 in words is "eighteen million, four hundred twenty-seven thousand, one hundred thirty-four".