180222402 has 8 divisors (see below), whose sum is σ = 360444816. Its totient is φ = 60074132.

The previous prime is 180222401. The next prime is 180222407. The reversal of 180222402 is 204222081.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

180222402 is an admirable number.

It is a super-2 number, since 2×180222402² = 64960228365299208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (180222401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15018528 + ... + 15018539.

It is an arithmetic number, because the mean of its divisors is an integer number (45055602).

Almost surely, 2^180222402 is an apocalyptic number.

180222402 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

180222402 is a wasteful number, since it uses less digits than its factorization.

180222402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30037072.

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 180222402 is about 13424.6937395234. The cubic root of 180222402 is about 564.8540641702.

Adding to 180222402 its reverse (204222081), we get a palindrome (384444483).

The spelling of 180222402 in words is "one hundred eighty million, two hundred twenty-two thousand, four hundred two".