18542472 has 64 divisors (see below), whose sum is σ = 50494080. Its totient is φ = 5640192.

The previous prime is 18542467. The next prime is 18542473. The reversal of 18542472 is 27424581.

It is not an unprimeable number, because it can be changed into a prime (18542473) 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 15 ways as a sum of consecutive naturals, for example, 31848 + ... + 32424.

It is an arithmetic number, because the mean of its divisors is an integer number (788970).

Almost surely, 2^18542472 is an apocalyptic number.

18542472 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 18542472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25247040).

18542472 is an abundant number, since it is smaller than the sum of its proper divisors (31951608).

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

18542472 is a wasteful number, since it uses less digits than its factorization.

18542472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 702 (or 698 counting only the distinct ones).

The product of its digits is 17920, while the sum is 33.

The square root of 18542472 is about 4306.0970727563. The cubic root of 18542472 is about 264.6808641918.

The spelling of 18542472 in words is "eighteen million, five hundred forty-two thousand, four hundred seventy-two".