73221822 has 24 divisors (see below), whose sum is σ = 167980176. Its totient is φ = 22971456.

The previous prime is 73221809. The next prime is 73221829. The reversal of 73221822 is 22812237.

73221822 = 1004² + 1005² + ... + 1071².

It is a happy number.

It is a super-2 number, since 2×73221822² = 10722870433999368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73221829) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 119338 + ... + 119949.

It is an arithmetic number, because the mean of its divisors is an integer number (6999174).

Almost surely, 2^73221822 is an apocalyptic number.

73221822 is an abundant number, since it is smaller than the sum of its proper divisors (94758354).

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

73221822 is a wasteful number, since it uses less digits than its factorization.

73221822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239312 (or 239309 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 73221822 is about 8556.9750496306. The cubic root of 73221822 is about 418.3568109376.

The spelling of 73221822 in words is "seventy-three million, two hundred twenty-one thousand, eight hundred twenty-two".