181232016 has 80 divisors (see below), whose sum is σ = 545215104. Its totient is φ = 50798592.

The previous prime is 181232003. The next prime is 181232017. The reversal of 181232016 is 610232181.

181232016 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (181232017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12720 + ... + 22896.

Almost surely, 2^181232016 is an apocalyptic number.

181232016 is a gapful number since it is divisible by the number (16) 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 181232016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (272607552).

181232016 is an abundant number, since it is smaller than the sum of its proper divisors (363983088).

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

181232016 is a wasteful number, since it uses less digits than its factorization.

181232016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10248 (or 10242 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 181232016 is about 13462.2440922753. The cubic root of 181232016 is about 565.9068799261.

Adding to 181232016 its reverse (610232181), we get a palindrome (791464197).

The spelling of 181232016 in words is "one hundred eighty-one million, two hundred thirty-two thousand, sixteen".