18106452 has 72 divisors (see below), whose sum is σ = 56341376. Its totient is φ = 4774464.

The previous prime is 18106423. The next prime is 18106453. The reversal of 18106452 is 25460181.

18106452 is a `hidden beast` number, since 1 + 8 + 10 + 645 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18106453) 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, 513 + ... + 6039.

Almost surely, 2^18106452 is an apocalyptic number.

18106452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18106452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28170688).

18106452 is an abundant number, since it is smaller than the sum of its proper divisors (38234924).

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

18106452 is a wasteful number, since it uses less digits than its factorization.

18106452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5557 (or 5552 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 18106452 is about 4255.1676817724. The cubic root of 18106452 is about 262.5897597801.

The spelling of 18106452 in words is "eighteen million, one hundred six thousand, four hundred fifty-two".