180129222 has 96 divisors (see below), whose sum is σ = 483292992. Its totient is φ = 47215872.

The previous prime is 180129221. The next prime is 180129241. The reversal of 180129222 is 222921081.

It is a super-3 number, since 3×180129222³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180129221) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 453528 + ... + 453924.

It is an arithmetic number, because the mean of its divisors is an integer number (5034302).

Almost surely, 2^180129222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 180129222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (241646496).

180129222 is an abundant number, since it is smaller than the sum of its proper divisors (303163770).

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

180129222 is a wasteful number, since it uses less digits than its factorization.

180129222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 702 (or 699 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 180129222 is about 13421.2228205928. Note that the first 3 decimals coincide. The cubic root of 180129222 is about 564.7566989618.

The spelling of 180129222 in words is "one hundred eighty million, one hundred twenty-nine thousand, two hundred twenty-two".