181228308 has 48 divisors (see below), whose sum is σ = 460488000. Its totient is φ = 55254528.

The previous prime is 181228277. The next prime is 181228319. The reversal of 181228308 is 803822181.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 7093 + ... + 20316.

It is an arithmetic number, because the mean of its divisors is an integer number (9593500).

Almost surely, 2^181228308 is an apocalyptic number.

It is an amenable number.

181228308 is an abundant number, since it is smaller than the sum of its proper divisors (279259692).

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

181228308 is a wasteful number, since it uses less digits than its factorization.

181228308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27464 (or 27462 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 33.

The square root of 181228308 is about 13462.1063730755. The cubic root of 181228308 is about 565.9030204222.

The spelling of 181228308 in words is "one hundred eighty-one million, two hundred twenty-eight thousand, three hundred eight".