183216128 has 48 divisors (see below), whose sum is σ = 369581940. Its totient is φ = 90800128.

The previous prime is 183216101. The next prime is 183216149. The reversal of 183216128 is 821612381.

183216128 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 181494784 + 1721344 = 13472^2 + 1312^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 183216094 and 183216103.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 280250 + ... + 280902.

Almost surely, 2^183216128 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 183216128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (184790970).

183216128 is an abundant number, since it is smaller than the sum of its proper divisors (186365812).

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

183216128 is an equidigital number, since it uses as much as digits as its factorization.

183216128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 812 (or 792 counting only the distinct ones).

The product of its digits is 4608, while the sum is 32.

The square root of 183216128 is about 13535.7352219966. The cubic root of 183216128 is about 567.9645550850.

The spelling of 183216128 in words is "one hundred eighty-three million, two hundred sixteen thousand, one hundred twenty-eight".