18442528 has 48 divisors (see below), whose sum is σ = 40049856. Its totient is φ = 8305920.

The previous prime is 18442511. The next prime is 18442531. The reversal of 18442528 is 82524481.

It is a junction number, because it is equal to n+sod(n) for n = 18442493 and 18442502.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17373 + ... + 18403.

It is an arithmetic number, because the mean of its divisors is an integer number (834372).

Almost surely, 2^18442528 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 18442528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20024928).

18442528 is an abundant number, since it is smaller than the sum of its proper divisors (21607328).

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

18442528 is a wasteful number, since it uses less digits than its factorization.

18442528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1097 (or 1089 counting only the distinct ones).

The product of its digits is 20480, while the sum is 34.

The square root of 18442528 is about 4294.4764523746. The cubic root of 18442528 is about 264.2044635828.

The spelling of 18442528 in words is "eighteen million, four hundred forty-two thousand, five hundred twenty-eight".