18343528 has 32 divisors (see below), whose sum is σ = 39902400. Its totient is φ = 7742592.

The previous prime is 18343517. The next prime is 18343529. The reversal of 18343528 is 82534381.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 18343493 and 18343502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18343529) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1308 + ... + 6196.

It is an arithmetic number, because the mean of its divisors is an integer number (1246950).

Almost surely, 2^18343528 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 18343528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19951200).

18343528 is an abundant number, since it is smaller than the sum of its proper divisors (21558872).

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

18343528 is a wasteful number, since it uses less digits than its factorization.

18343528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4969 (or 4965 counting only the distinct ones).

The product of its digits is 23040, while the sum is 34.

The square root of 18343528 is about 4282.9345080213. The cubic root of 18343528 is about 263.7308628478.

The spelling of 18343528 in words is "eighteen million, three hundred forty-three thousand, five hundred twenty-eight".