18048972 has 36 divisors (see below), whose sum is σ = 42831096. Its totient is φ = 5915520.

The previous prime is 18048967. The next prime is 18048973. The reversal of 18048972 is 27984081.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 18048972.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18048973) 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 11 ways as a sum of consecutive naturals, for example, 74772 + ... + 75012.

Almost surely, 2^18048972 is an apocalyptic number.

18048972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18048972 is an abundant number, since it is smaller than the sum of its proper divisors (24782124).

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

18048972 is a wasteful number, since it uses less digits than its factorization.

18048972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406 (or 325 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 18048972 is about 4248.4081724806. The cubic root of 18048972 is about 262.3115963290.

The spelling of 18048972 in words is "eighteen million, forty-eight thousand, nine hundred seventy-two".