18371472 has 120 divisors (see below), whose sum is σ = 56487456. Its totient is φ = 5128704.

The previous prime is 18371453. The next prime is 18371473. The reversal of 18371472 is 27417381.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

Its product of digits (9408) is a multiple of the sum of its prime divisors (192).

It is not an unprimeable number, because it can be changed into a prime (18371473) 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, 171643 + ... + 171749.

Almost surely, 2^18371472 is an apocalyptic number.

18371472 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 18371472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28243728).

18371472 is an abundant number, since it is smaller than the sum of its proper divisors (38115984).

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

18371472 is a wasteful number, since it uses less digits than its factorization.

18371472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205 (or 192 counting only the distinct ones).

The product of its digits is 9408, while the sum is 33.

The square root of 18371472 is about 4286.1955158392. The cubic root of 18371472 is about 263.8647148915.

The spelling of 18371472 in words is "eighteen million, three hundred seventy-one thousand, four hundred seventy-two".