18308352 has 72 divisors (see below), whose sum is σ = 50364160. Its totient is φ = 5898240.

The previous prime is 18308293. The next prime is 18308359. The reversal of 18308352 is 25380381.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18308359) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23424 + ... + 24192.

Almost surely, 2^18308352 is an apocalyptic number.

18308352 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 18308352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25182080).

18308352 is an abundant number, since it is smaller than the sum of its proper divisors (32055808).

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

18308352 is an equidigital number, since it uses as much as digits as its factorization.

18308352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819 (or 805 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 18308352 is about 4278.8260072127. The cubic root of 18308352 is about 263.5621760483.

The spelling of 18308352 in words is "eighteen million, three hundred eight thousand, three hundred fifty-two".